Brown Instruments Co
Brown InstActive Patents
0
Total Holdings
165
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2452023A | Safe failure measuring and controlling apparatus | Expired / Lapsed | 1947-03-15 | 1948-10-19 | 0 | Details |
| US2451425A | Flowmeter | Expired / Lapsed | 1946-12-18 | 1948-10-12 | 0 | Details |
| US2446153A | Recalibrating motor control system | Expired / Lapsed | 1946-12-07 | 1948-07-27 | 0 | Details |
| US2445289A | Induction motor damping system | Expired / Lapsed | 1946-12-04 | 1948-07-13 | 0 | Details |
| US2445272A | Recording instrument having plural pens and an oscillating … | Expired / Lapsed | 1944-12-15 | 1948-07-13 | 0 | Details |
| US2445159A | Thermocouple tube with exposed junction | Expired / Lapsed | 1943-08-12 | 1948-07-13 | 0 | Details |
| US2429466A | Measuring and controlling apparatus | Expired / Lapsed | 1942-11-04 | 1947-10-21 | 0 | Details |
| US2428129A | Temperature measuring system | Expired / Lapsed | 1943-12-01 | 1947-09-30 | 0 | Details |
| US2424146A | Calibration mechanism for selfbalancing potentiometers | Expired / Lapsed | 1943-03-25 | 1947-07-15 | 0 | Details |
| US2423480A | Multiple recording instrument | Expired / Lapsed | 1942-06-20 | 1947-07-08 | 0 | Details |
| US2423540A | Self-balancing potentiometer mechanism | Expired / Lapsed | 1941-12-01 | 1947-07-08 | 0 | Details |
| US2423524A | Vibrator | Expired / Lapsed | 1941-12-01 | 1947-07-08 | 0 | Details |
| US2423479A | Measuring, recording, and controlling apparatus | Expired / Lapsed | 1941-12-01 | 1947-07-08 | 0 | Details |
| US2422273A | Lens type radiation pyrometer | Expired / Lapsed | 1942-11-28 | 1947-06-17 | 0 | Details |
| US2418052A | Measuring and controlling apparatus | Expired / Lapsed | 1942-10-08 | 1947-03-25 | 0 | Details |
| US2413584A | Control instrument | Expired / Lapsed | 1940-11-08 | 1946-12-31 | 0 | Details |
| US2413128A | Measuring and control apparatus | Expired / Lapsed | 1942-04-23 | 1946-12-24 | 0 | Details |
| US2409871A | Air control instrument | Expired / Lapsed | 1939-10-13 | 1946-10-22 | 0 | Details |
| US2407838A | Measuring apparatus | Expired / Lapsed | 1942-09-30 | 1946-09-17 | 0 | Details |
| US2405075A | Protecting tube | Expired / Lapsed | 1943-11-27 | 1946-07-30 | 0 | Details |
| US2404891A | Control apparatus | Expired / Lapsed | 1943-03-25 | 1946-07-30 | 0 | Details |
| US2404894A | Measuring apparatus | Expired / Lapsed | 1942-09-25 | 1946-07-30 | 0 | Details |
| US2404344A | Measuring and controlling apparatus | Expired / Lapsed | 1944-07-07 | 1946-07-16 | 0 | Details |
| US2404342A | Measuring and control apparatus | Expired / Lapsed | 1941-02-01 | 1946-07-16 | 0 | Details |
| US2401832A | Control system | Expired / Lapsed | 1942-08-06 | 1946-06-11 | 0 | Details |
| US2398341A | Control apparatus | Expired / Lapsed | 1944-11-14 | 1946-04-09 | 0 | Details |
| US2392916A | Measuring instrument | Expired / Lapsed | 1942-06-20 | 1946-01-15 | 0 | Details |
| US2390902A | Control system | Expired / Lapsed | 1942-08-28 | 1945-12-11 | 0 | Details |
| US2390793A | Control apparatus | Expired / Lapsed | 1942-06-13 | 1945-12-11 | 0 | Details |
| US2388769A | Measuring and controlling apparatus | Expired / Lapsed | 1943-05-25 | 1945-11-13 | 0 | Details |
| US2385481A | Measuring and controlling apparatus | Expired / Lapsed | 1943-03-25 | 1945-09-25 | 0 | Details |
| US2385454A | Apparatus for automatically adjusting electrical networks | Expired / Lapsed | 1941-07-17 | 1945-09-25 | 0 | Details |
| US2381948A | Control system | Expired / Lapsed | 1942-01-29 | 1945-08-14 | 0 | Details |
| US2377474A | Measuring instrument | Expired / Lapsed | 1943-03-25 | 1945-06-05 | 0 | Details |
| US2376599A | Measuring and controlling apparatus | Expired / Lapsed | 1943-01-23 | 1945-05-22 | 0 | Details |
| US2376598A | Measuring apparatus | Expired / Lapsed | 1943-01-23 | 1945-05-22 | 0 | Details |
| US2376488A | Control apparatus | Expired / Lapsed | 1942-11-04 | 1945-05-22 | 0 | Details |
| US2376513A | Control apparatus | Expired / Lapsed | 1942-10-09 | 1945-05-22 | 0 | Details |
| US2375159A | Measuring and control apparatus | Expired / Lapsed | 1943-07-03 | 1945-05-01 | 0 | Details |
| US2369887A | Control mechanism | Expired / Lapsed | 1943-01-23 | 1945-02-20 | 0 | Details |
| US2369624A | Pyrometry | Expired / Lapsed | 1942-02-13 | 1945-02-13 | 0 | Details |
| US2368912A | Measuring instrument | Expired / Lapsed | 1943-11-02 | 1945-02-06 | 0 | Details |
| US2368937A | Measuring and control instrument | Expired / Lapsed | 1940-05-04 | 1945-02-06 | 0 | Details |
| US2368093A | Measuring apparatus | Expired / Lapsed | 1943-09-03 | 1945-01-30 | 0 | Details |
| US2367869A | Control apparatus | Expired / Lapsed | 1942-06-12 | 1945-01-23 | 0 | Details |
| US2367868A | Measuring apparatus | Expired / Lapsed | 1942-05-27 | 1945-01-23 | 0 | Details |
| US2366618A | Measuring and control apparatus | Expired / Lapsed | 1942-05-14 | 1945-01-02 | 0 | Details |
| US2364483A | Measuring apparatus | Expired / Lapsed | 1942-03-19 | 1944-12-05 | 0 | Details |
| US2363336A | Measuring and control apparatus | Expired / Lapsed | 1941-03-13 | 1944-11-21 | 0 | Details |
| US2361294A | Control system | Expired / Lapsed | 1941-08-22 | 1944-10-24 | 0 | Details |
| US2359885A | Furnace temperature control | Expired / Lapsed | 1941-03-07 | 1944-10-10 | 0 | Details |
| US2358243A | Measuring instrument | Expired / Lapsed | 1942-06-20 | 1944-09-12 | 0 | Details |
| US2357193A | Radiation pyrometer | Expired / Lapsed | 1941-09-24 | 1944-08-29 | 0 | Details |
| US2357241A | Impedance element | Expired / Lapsed | 1941-05-01 | 1944-08-29 | 0 | Details |
| US2355537A | Measuring and control apparatus | Expired / Lapsed | 1942-11-19 | 1944-08-08 | 0 | Details |
| US2352143A | Control apparatus | Expired / Lapsed | 1940-04-27 | 1944-06-20 | 0 | Details |
| US2349963A | Measuring and control apparatus | Expired / Lapsed | 1937-08-14 | 1944-05-30 | 0 | Details |
| US2349437A | Measuring and control apparatus | Expired / Lapsed | 1941-01-07 | 1944-05-23 | 0 | Details |
| US2349436A | Temperature measuring device | Expired / Lapsed | 1938-03-31 | 1944-05-23 | 0 | Details |
| US2348670A | Control system | Expired / Lapsed | 1940-09-06 | 1944-05-09 | 0 | Details |
| US2345399A | Control system | Expired / Lapsed | 1942-06-12 | 1944-03-28 | 0 | Details |
| US2339861A | Measuring and control apparatus | Expired / Lapsed | 1939-01-17 | 1944-01-25 | 0 | Details |
| US2337202A | Resistor | Expired / Lapsed | 1941-12-09 | 1943-12-21 | 0 | Details |
| US2335943A | Electrical control system | Expired / Lapsed | 1941-10-16 | 1943-12-07 | 0 | Details |
| US2331698A | Measuring and control apparatus | Expired / Lapsed | 1939-05-13 | 1943-10-12 | 0 | Details |
| US2323885A | Measuring and control apparatus | Expired / Lapsed | 1941-05-14 | 1943-07-13 | 0 | Details |
| US2322501A | Automatic temperature control instrument | Expired / Lapsed | 1940-07-30 | 1943-06-22 | 0 | Details |
| US2316240A | Control apparatus | Expired / Lapsed | 1941-10-31 | 1943-04-13 | 0 | Details |
| US2315714A | Measuring apparatus | Expired / Lapsed | 1942-06-12 | 1943-04-06 | 0 | Details |
| US2315682A | Measuring instrument | Expired / Lapsed | 1938-12-02 | 1943-04-06 | 0 | Details |
| US2314152A | Control instrument | Expired / Lapsed | 1940-03-30 | 1943-03-16 | 0 | Details |
| US2312711A | Control apparatus | Expired / Lapsed | 1939-03-24 | 1943-03-02 | 0 | Details |
| US2312022A | Constant direct current source | Expired / Lapsed | 1940-05-03 | 1943-02-23 | 0 | Details |
| US2309993A | Drier control | Expired / Lapsed | 1938-08-13 | 1943-02-02 | 0 | Details |
| US2306479A | Measuring apparatus | Expired / Lapsed | 1942-02-14 | 1942-12-29 | 0 | Details |
| US2304641A | Control apparatus | Expired / Lapsed | 1940-05-04 | 1942-12-08 | 0 | Details |
| US2303843A | Control system | Expired / Lapsed | 1940-07-29 | 1942-12-01 | 0 | Details |
| US2302049A | Measuring and control method and apparatus | Expired / Lapsed | 1938-10-11 | 1942-11-17 | 0 | Details |
| US2300742A | Measuring and control apparatus | Expired / Lapsed | 1938-11-15 | 1942-11-03 | 0 | Details |
| US2297361A | Air operated instrument | Expired / Lapsed | 1939-11-09 | 1942-09-29 | 0 | Details |
| US2295960A | Measuring and control apparatus | Expired / Lapsed | 1940-01-03 | 1942-09-15 | 0 | Details |
| US2295795A | Registering apparatus | Expired / Lapsed | 1938-11-23 | 1942-09-15 | 0 | Details |
| US2292761A | Air control instrument | Expired / Lapsed | 1939-09-15 | 1942-08-11 | 0 | Details |
| US2292937A | Time temperature measuring instrument | Expired / Lapsed | 1938-10-19 | 1942-08-11 | 0 | Details |
| US2290987A | Air control instrument | Expired / Lapsed | 1939-08-16 | 1942-07-28 | 0 | Details |
| US2289947A | Measuring and control apparatus | Expired / Lapsed | 1938-06-22 | 1942-07-14 | 0 | Details |
| US2285118A | Impedance measuring apparatus | Expired / Lapsed | 1938-08-31 | 1942-06-02 | 0 | Details |
| US2285288A | Automatic control apparatus | Expired / Lapsed | 1938-04-15 | 1942-06-02 | 0 | Details |
| US2283304A | Latch mechanism | Expired / Lapsed | 1941-03-22 | 1942-05-19 | 0 | Details |
| US2282726A | Control apparatus | Expired / Lapsed | 1939-10-25 | 1942-05-12 | 0 | Details |
| US2282480A | Measuring and control apparatus | Expired / Lapsed | 1938-03-31 | 1942-05-12 | 0 | Details |
| US2280233A | Power set flow meter | Expired / Lapsed | 1937-08-25 | 1942-04-21 | 0 | Details |
| US2276506A | Measuring and control apparatus | Expired / Lapsed | 1940-01-03 | 1942-03-17 | 0 | Details |
| US2275246A | Measuring instrument | Expired / Lapsed | 1938-12-15 | 1942-03-03 | 0 | Details |
| US2273103A | Measuring and control apparatus | Expired / Lapsed | 1939-01-27 | 1942-02-17 | 0 | Details |
| US2272914A | Measuring instrument of the potentiometer type | Expired / Lapsed | 1938-09-30 | 1942-02-10 | 0 | Details |
| US2270732A | Measuring and control apparatus | Expired / Lapsed | 1940-05-22 | 1942-01-20 | 0 | Details |
| US2266871A | Regulating apparatus | Expired / Lapsed | 1938-09-13 | 1941-12-23 | 0 | Details |
| US2264956A | Means for measuring and utilizing small direct currents | Expired / Lapsed | 1934-11-21 | 1941-12-02 | 0 | Details |
| US2263497A | Measuring and control apparatus | Expired / Lapsed | 1938-09-24 | 1941-11-18 | 0 | Details |
| US2260977A | Control apparatus | Expired / Lapsed | 1940-08-14 | 1941-10-28 | 0 | Details |
| US2261087A | Control system | Expired / Lapsed | 1939-04-13 | 1941-10-28 | 0 | Details |
| US2256304A | Control apparatus | Expired / Lapsed | 1937-08-19 | 1941-09-16 | 0 | Details |
| US2255601A | Measuring apparatus | Expired / Lapsed | 1937-06-29 | 1941-09-09 | 0 | Details |
| US2252301A | Control switch means | Expired / Lapsed | 1937-05-22 | 1941-08-12 | 0 | Details |
| US2246686A | Control system | Expired / Lapsed | 1937-08-03 | 1941-06-24 | 0 | Details |
| US2245730A | Control system | Expired / Lapsed | 1937-05-12 | 1941-06-17 | 0 | Details |
| US2245034A | Measuring apparatus | Expired / Lapsed | 1937-05-29 | 1941-06-10 | 0 | Details |
| US2242656A | Measuring instrument | Expired / Lapsed | 1938-03-08 | 1941-05-20 | 0 | Details |
| US2241557A | Photometric apparatus | Expired / Lapsed | 1936-07-25 | 1941-05-13 | 0 | Details |
| US2237036A | Temperature measuring apparatus | Expired / Lapsed | 1937-05-20 | 1941-04-01 | 0 | Details |
| US2237038A | Fluid pressure control apparatus | Expired / Lapsed | 1937-04-16 | 1941-04-01 | 0 | Details |
| US2232202A | Time temperature measuring instrument | Expired / Lapsed | 1938-10-15 | 1941-02-18 | 0 | Details |
| US2227600A | Measuring instrument | Expired / Lapsed | 1939-12-14 | 1941-01-07 | 0 | Details |
| US2224119A | Control system | Expired / Lapsed | 1938-10-27 | 1940-12-03 | 0 | Details |
| US2223666A | Control method and apparatus | Expired / Lapsed | 1937-01-09 | 1940-12-03 | 0 | Details |
| US2222947A | Control system | Expired / Lapsed | 1939-05-24 | 1940-11-26 | 0 | Details |
| US2220974A | Air controlling instrument | Expired / Lapsed | 1938-04-28 | 1940-11-12 | 0 | Details |
| US2219775A | Measuring apparatus | Expired / Lapsed | 1937-11-20 | 1940-10-29 | 0 | Details |
| US2218477A | Measuring and control apparatus | Expired / Lapsed | 1934-01-16 | 1940-10-15 | 0 | Details |
| US2216472A | Measuring and control apparatus | Expired / Lapsed | 1938-02-04 | 1940-10-01 | 0 | Details |
| US2215805A | Measuring and control apparatus | Expired / Lapsed | 1937-03-31 | 1940-09-24 | 0 | Details |
| US2211114A | Control apparatus | Expired / Lapsed | 1938-03-01 | 1940-08-13 | 0 | Details |
| US2211148A | Measuring instrument | Expired / Lapsed | 1938-01-18 | 1940-08-13 | 0 | Details |
| US2209369A | Measuring and control apparatus | Expired / Lapsed | 1938-09-24 | 1940-07-30 | 0 | Details |
| US2203057A | Pen release mechanism | Expired / Lapsed | 1938-03-08 | 1940-06-04 | 0 | Details |
| US2194937A | Control apparatus | Expired / Lapsed | 1936-12-14 | 1940-03-26 | 0 | Details |
| US2192022A | Measuring and control apparatus | Expired / Lapsed | 1938-10-29 | 1940-02-27 | 0 | Details |
| US2191997A | Measuring and control apparatus | Expired / Lapsed | 1938-09-24 | 1940-02-27 | 0 | Details |
| US2188754A | Means for indicating defects in threads | Expired / Lapsed | 1936-12-29 | 1940-01-30 | 0 | Details |
| US2187613A | Controller | Expired / Lapsed | 1933-07-17 | 1940-01-16 | 0 | Details |
| US2172064A | Measuring and control apparatus | Expired / Lapsed | 1937-12-23 | 1939-09-05 | 0 | Details |
| US2156826A | Thermometric means | Expired / Lapsed | 1936-04-28 | 1939-05-02 | 0 | Details |
| US2150502A | Measuring, indicating, and recording instrument | Expired / Lapsed | 1931-06-23 | 1939-03-14 | 0 | Details |
| US2150006A | Measuring and control method and apparatus | Expired / Lapsed | 1933-04-21 | 1939-03-07 | 0 | Details |
| US2125081A | Measuring and control apparatus | Expired / Lapsed | 1935-10-04 | 1938-07-26 | 0 | Details |
| US2122370A | Slide wire resistance | Expired / Lapsed | 1934-04-26 | 1938-06-28 | 0 | Details |
| US2117800A | Fluid pressure control apparatus | Expired / Lapsed | 1935-07-19 | 1938-05-17 | 0 | Details |
| US2072921A | Fluid pressure control apparatus | Expired / Lapsed | 1935-09-26 | 1937-03-09 | 0 | Details |
| US2065805A | Potentiometer | Expired / Lapsed | 1930-02-25 | 1936-12-29 | 0 | Details |
| US2052764A | Measuring apparatus | Expired / Lapsed | 1930-06-25 | 1936-09-01 | 0 | Details |
| US1979085A | Thermocouple | Expired / Lapsed | 1930-12-06 | 1934-10-30 | 0 | Details |
| US1974187A | Measuring apparatus | Expired / Lapsed | 1932-11-01 | 1934-09-18 | 0 | Details |
| US1931223A | Potentiometer instrument | Expired / Lapsed | 1932-02-04 | 1933-10-17 | 0 | Details |
| US1922251A | Control system | Expired / Lapsed | 1929-10-18 | 1933-08-15 | 0 | Details |
| US1922194A | Measuring apparatus | Expired / Lapsed | 1927-04-22 | 1933-08-15 | 0 | Details |
| US1916420A | Control apparatus | Expired / Lapsed | 1929-11-02 | 1933-07-04 | 0 | Details |
| US1898124A | Measuring and control apparatus | Expired / Lapsed | 1928-11-27 | 1933-02-21 | 0 | Details |
| US1898183A | Recording and control system and apparatus therefor | Expired / Lapsed | 1926-11-04 | 1933-02-21 | 0 | Details |
| US1898182A | Automatic control system and apparatus therefor | Expired / Lapsed | 1924-03-25 | 1933-02-21 | 0 | Details |
| US1891156A | Manometer | Expired / Lapsed | 1927-09-10 | 1932-12-13 | 0 | Details |
| US1891155A | Metering | Expired / Lapsed | 1926-08-02 | 1932-12-13 | 0 | Details |
| US1855774A | Humidity measuring | Expired / Lapsed | 1924-03-04 | 1932-04-26 | 0 | Details |
| US1826879A | Electric measuring instrument | Expired / Lapsed | 1929-02-06 | 1931-10-13 | 0 | Details |
| US1818619A | Gas analysis apparatus | Expired / Lapsed | 1926-08-19 | 1931-08-11 | 0 | Details |
| US1808507A | Pyrometer for metallurgical furnaces | Expired / Lapsed | 1929-01-16 | 1931-06-02 | 0 | Details |
| US1784522A | Method of and apparatus for measuring | Expired / Lapsed | 1929-09-21 | 1930-12-09 | 0 | Details |
| US1743852A | Meter | Expired / Lapsed | 1926-05-03 | 1930-01-14 | 0 | Details |
| US1707624A | Gas-comparison apparatus | Expired / Lapsed | 1927-05-25 | 1929-04-02 | 0 | Details |
| US1615451A | Thermocouple | Expired / Lapsed | 1926-02-01 | 1927-01-25 | 0 | Details |
| US1615503A | Combustion-testing apparatus | Expired / Lapsed | 1923-08-31 | 1927-01-25 | 0 | Details |
| US1603729A | Furnace control | Expired / Lapsed | 1925-12-31 | 1926-10-19 | 0 | Details |
| US1564518A | Recording meter | Expired / Lapsed | 1924-12-17 | 1925-12-08 | 0 | Details |
| US1524937A | Electrode for electrolytic conductivity cells | Expired / Lapsed | 1924-01-10 | 1925-02-03 | 0 | Details |
| US1446961A | Recording instrument | Expired / Lapsed | 1921-08-17 | 1923-02-27 | 0 | Details |