Westinghouse Lamp Co
WestinghouActive Patents
0
Total Holdings
51
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2046360A | Bulb coating machine | Expired / Lapsed | 1934-11-16 | 1936-07-07 | 0 | Details |
| US2037924A | X-ray intensity meter | Expired / Lapsed | 1928-12-24 | 1936-04-21 | 0 | Details |
| US2036069A | Electric switch | Expired / Lapsed | 1932-03-05 | 1936-03-31 | 0 | Details |
| US2033748A | Radio tube base | Expired / Lapsed | 1933-06-28 | 1936-03-10 | 0 | Details |
| US2013411A | Pluro-metallic rod | Expired / Lapsed | 1932-06-04 | 1935-09-03 | 0 | Details |
| US2006568A | Method of sealing metal wires to glass | Expired / Lapsed | 1932-07-01 | 1935-07-02 | 0 | Details |
| US1992973A | Ceiling lighting unit | Expired / Lapsed | 1932-10-01 | 1935-03-05 | 0 | Details |
| US1989824A | Method of glazing refractory bodies | Expired / Lapsed | 1933-10-25 | 1935-02-05 | 0 | Details |
| US1989800A | Mount gettering device | Expired / Lapsed | 1932-08-24 | 1935-02-05 | 0 | Details |
| US1972162A | Heater element electron emitting cathode | Expired / Lapsed | 1930-01-28 | 1934-09-04 | 0 | Details |
| US1942002A | Automatic temperature control device | Expired / Lapsed | 1928-02-27 | 1934-01-02 | 0 | Details |
| US1929155A | Vacuum switch | Expired / Lapsed | 1932-03-29 | 1933-10-03 | 0 | Details |
| US1923845A | Photo-electric device | Expired / Lapsed | 1931-01-14 | 1933-08-22 | 0 | Details |
| US1920630A | Automatic electrode mounting machine | Expired / Lapsed | 1930-06-26 | 1933-08-01 | 0 | Details |
| US1914762A | Cathode glow discharge device | Expired / Lapsed | 1930-09-11 | 1933-06-20 | 0 | Details |
| US1900104A | Method and apparatus for coating the interior wall of hollo… | Expired / Lapsed | 1927-12-09 | 1933-03-07 | 0 | Details |
| US1893296A | Preparation of metal phosphides | Expired / Lapsed | 1929-11-27 | 1933-01-03 | 0 | Details |
| US1893286A | Method of carbonizing metals and alloys | Expired / Lapsed | 1928-05-25 | 1933-01-03 | 0 | Details |
| US1870975A | Cathode ray oscillograph | Expired / Lapsed | 1928-09-11 | 1932-08-09 | 0 | Details |
| US1840055A | Glow relay tube | Expired / Lapsed | 1928-02-07 | 1932-01-05 | 0 | Details |
| US1835113A | Protective coating for metal surfaces | Expired / Lapsed | 1928-04-20 | 1931-12-08 | 0 | Details |
| US1821240A | Machine for testing electric lamps | Expired / Lapsed | 1927-01-15 | 1931-09-01 | 0 | Details |
| US1814719A | Ductile thorium and method of making the same | Expired / Lapsed | 1924-06-05 | 1931-07-14 | 0 | Details |
| US1795730A | Electron-emission device | Expired / Lapsed | 1924-12-30 | 1931-03-10 | 0 | Details |
| US1783642A | Automatic soldering machine | Expired / Lapsed | 1928-11-02 | 1930-12-02 | 0 | Details |
| US1765487A | Electron-discharge device with indirectily-heated cathode | Expired / Lapsed | 1927-07-01 | 1930-06-24 | 0 | Details |
| US1760629A | Method of threading bases | Expired / Lapsed | 1929-02-01 | 1930-05-27 | 0 | Details |
| US1760427A | Process for preventing weathering of glass | Expired / Lapsed | 1928-10-17 | 1930-05-27 | 0 | Details |
| US1733744A | Composite x-ray target | Expired / Lapsed | 1926-01-16 | 1929-10-29 | 0 | Details |
| US1731244A | Electron-emitting material and method of making the same | Expired / Lapsed | 1926-06-29 | 1929-10-15 | 0 | Details |
| US1720000A | Vibration and sag resistant filament | Expired / Lapsed | 1926-07-28 | 1929-07-09 | 0 | Details |
| US1698845A | Method of dry-coating lamp bulbs | Expired / Lapsed | 1927-12-10 | 1929-01-15 | 0 | Details |
| US1695819A | Activation of filaments | Expired / Lapsed | 1927-04-01 | 1928-12-18 | 0 | Details |
| US1663553A | Electron-emitting material | Expired / Lapsed | 1927-02-24 | 1928-03-27 | 0 | Details |
| US1653367A | Misch-metal wire | Expired / Lapsed | 1925-01-29 | 1927-12-20 | 0 | Details |
| US1651399A | Automatic soldering machine for lamp bases | Expired / Lapsed | 1924-02-20 | 1927-12-06 | 0 | Details |
| US1648962A | Method of preparing uranium in a coherent mass | Expired / Lapsed | 1922-08-22 | 1927-11-15 | 0 | Details |
| US1647591A | Gaseous-discharge lamp | Expired / Lapsed | 1923-06-21 | 1927-11-01 | 0 | Details |
| US1625426A | Target for x-ray tubes | Expired / Lapsed | 1920-12-21 | 1927-04-19 | 0 | Details |
| US1624071A | Method of affixing coatings on incandescent-lamp filaments | Expired / Lapsed | 1921-07-28 | 1927-04-12 | 0 | Details |
| US1616010A | Destruction of the electrical conductivity of films | Expired / Lapsed | 1923-01-03 | 1927-02-01 | 0 | Details |
| US1591717A | Electron emission material and method of manufacture | Expired / Lapsed | 1922-09-28 | 1926-07-06 | 0 | Details |
| US1585905A | Grid-making machine | Expired / Lapsed | 1922-10-14 | 1926-05-25 | 0 | Details |
| US1581766A | Process of coating incandescent lamp bulbs | Expired / Lapsed | 1921-03-19 | 1926-04-20 | 0 | Details |
| US1565565A | Electric gas lamp | Expired / Lapsed | 1922-02-02 | 1925-12-15 | 0 | Details |
| US1465998A | Detector tube | Expired / Lapsed | 1919-02-27 | 1923-08-28 | 0 | Details |
| US1461118A | Filament | Expired / Lapsed | 1917-12-19 | 1923-07-10 | 0 | Details |
| US1338818A | Optical apparatus and method of operating the same | Expired / Lapsed | 1919-10-23 | 1920-05-04 | 0 | Details |
| US1081618A | Process of preparing billets of refractory materials. | Expired / Lapsed | 1912-03-28 | 1913-12-16 | 0 | Details |
| US1046822A | Tension device. | Expired / Lapsed | 1911-03-23 | 1912-12-10 | 0 | Details |
| US1046723A | Tube-cutting machine. | Expired / Lapsed | 1909-11-22 | 1912-12-10 | 0 | Details |