Johnson Service Co
Johnson SeActive Patents
0
Total Holdings
35
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US5163327A | Pressure sensing elements | Expired / Lapsed | 1991-01-10 | 1992-11-17 | 18 | Details |
| US4159470A | Data communications systems employing redundant series tran… | Expired / Lapsed | 1977-05-16 | 1979-06-26 | 19 | Details |
| US4083356A | Solar energy apparatus | Expired / Lapsed | 1976-08-19 | 1978-04-11 | 19 | Details |
| US4056043A | Fluid power piston actuators | Expired / Lapsed | 1975-10-28 | 1977-11-01 | 24 | Details |
| US4042780A | Multiple message frame adaptor apparatus for loop communica… | Expired / Lapsed | 1975-07-23 | 1977-08-16 | 36 | Details |
| US3938144A | Digital multiplexing system remote scanning of a plurality … | Expired / Lapsed | 1973-11-28 | 1976-02-10 | 29 | Details |
| US3913344A | Fluid energy monitoring apparatus | Expired / Lapsed | 1974-10-15 | 1975-10-21 | 22 | Details |
| US3845472A | Data communication system employing a series loop | Expired / Lapsed | 1972-12-15 | 1974-10-29 | 56 | Details |
| US3832688A | Status sensing and transmitting circuit | Expired / Lapsed | 1972-12-15 | 1974-08-27 | 19 | Details |
| US3791397A | Diaphragm pressure sensor | Expired / Lapsed | 1972-08-30 | 1974-02-12 | 15 | Details |
| US3750155A | Temperature monitoring circuit | Expired / Lapsed | 1971-08-03 | 1973-07-31 | 5 | Details |
| US3742327A | Proportional motor actuator circuit | Expired / Lapsed | 1971-01-15 | 1973-06-26 | 22 | Details |
| US3742379A | Voltage to frequency converter | Expired / Lapsed | 1970-11-12 | 1973-06-26 | 6 | Details |
| US3735353A | Alarm transmission line security system utilizing pseudo ra… | Expired / Lapsed | 1971-10-28 | 1973-05-22 | 27 | Details |
| US3506171A | Method and apparatus for trim finishing blow molded contain… | Expired / Lapsed | 1968-04-26 | 1970-04-14 | 0 | Details |
| US3465931A | Method of automatically trim finishing blow molded plastic … | Expired / Lapsed | 1967-07-17 | 1969-09-09 | 0 | Details |
| US2846983A | Single acting motor with pneumatic return spring | Expired / Lapsed | 1955-04-14 | 1958-08-12 | 0 | Details |
| US2820434A | Single-acting motor with pneumatic return spring | Expired / Lapsed | 1955-07-18 | 1958-01-21 | 0 | Details |
| US2601867A | Pneumatic relay | Expired / Lapsed | 1946-07-12 | 1952-07-01 | 0 | Details |
| US2575085A | Pressure fluid follow-up motor with pilot pressure control | Expired / Lapsed | 1945-07-18 | 1951-11-13 | 0 | Details |
| US2358732A | Pressure operated switch | Expired / Lapsed | 1943-08-07 | 1944-09-19 | 0 | Details |
| US2320007A | Damper | Expired / Lapsed | 1941-09-19 | 1943-05-25 | 0 | Details |
| US2312671A | Thermostatic and like unit | Expired / Lapsed | 1940-12-19 | 1943-03-02 | 0 | Details |
| US2272815A | Regulating device | Expired / Lapsed | 1938-09-12 | 1942-02-10 | 0 | Details |
| US2209844A | Damper | Expired / Lapsed | 1938-01-14 | 1940-07-30 | 0 | Details |
| US2205930A | Pneumatic control system | Expired / Lapsed | 1939-02-27 | 1940-06-25 | 0 | Details |
| US2120507A | Temperature regulation | Expired / Lapsed | 1936-08-08 | 1938-06-14 | 0 | Details |
| US2080950A | Temperature control device | Expired / Lapsed | 1935-11-16 | 1937-05-18 | 0 | Details |
| US2080212A | Control mechanism for dampers and the like | Expired / Lapsed | 1934-10-15 | 1937-05-11 | 0 | Details |
| US2069418A | Temperature regulation | Expired / Lapsed | 1936-08-08 | 1937-02-02 | 0 | Details |
| US2064175A | Automatic control device | Expired / Lapsed | 1935-11-16 | 1936-12-15 | 0 | Details |
| US2060589A | Refrigeration | Expired / Lapsed | 1935-10-02 | 1936-11-10 | 0 | Details |
| US2057050A | Temperature regulation | Expired / Lapsed | 1933-07-13 | 1936-10-13 | 0 | Details |
| US1742091A | Automatic control device | Expired / Lapsed | 1928-06-25 | 1929-12-31 | 0 | Details |
| US1337367A | High-temperature thermostat | Expired / Lapsed | 1915-02-11 | 1920-04-20 | 0 | Details |