Johnson Service Co
Johnson SeActive Patents
0
Total Holdings
16
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4159470A | Data communications systems employing redundant series tran… | Expired / Lapsed | 1977-05-16 | 1979-06-26 | 19 | Details |
| US4042780A | Multiple message frame adaptor apparatus for loop communica… | Expired / Lapsed | 1975-07-23 | 1977-08-16 | 36 | 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 |
| 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 |
| US2846983A | Single acting motor with pneumatic return spring | Expired / Lapsed | 1955-04-14 | 1958-08-12 | 0 | Details |
| US2601867A | Pneumatic relay | Expired / Lapsed | 1946-07-12 | 1952-07-01 | 0 | Details |
| US2358732A | Pressure operated switch | Expired / Lapsed | 1943-08-07 | 1944-09-19 | 0 | Details |
| US2205930A | Pneumatic control system | Expired / Lapsed | 1939-02-27 | 1940-06-25 | 0 | Details |
| US2080950A | Temperature control device | Expired / Lapsed | 1935-11-16 | 1937-05-18 | 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 |