Leeds and Northrup Co
Leeds andActive Patents
0
Total Holdings
15
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3555252A | Learning control of actuators in control systems | Expired / Lapsed | 1967-05-11 | 1971-01-12 | 20 | Details |
| US3529293A | Supervisory and control system | Expired / Lapsed | 1967-04-10 | 1970-09-15 | 0 | Details |
| US3515343A | Correction entry circuit | Expired / Lapsed | 1966-03-14 | 1970-06-02 | 0 | Details |
| US3419772A | Probabilistic and deterministic filter for control systems | Expired / Lapsed | 1964-09-25 | 1968-12-31 | 0 | Details |
| US3405279A | Digital power generation control system | Expired / Lapsed | 1965-06-04 | 1968-10-08 | 0 | Details |
| US3329311A | Mass-flow rate control | Expired / Lapsed | 1965-11-22 | 1967-07-04 | 4 | Details |
| US2493078A | Immersion unit for radiation pyrometers | Expired / Lapsed | 1945-08-20 | 1950-01-03 | 0 | Details |
| US2336929A | Telemetric system | Expired / Lapsed | 1942-06-19 | 1943-12-14 | 0 | Details |
| US2325232A | Control system | Expired / Lapsed | 1941-11-07 | 1943-07-27 | 0 | Details |
| US2300537A | Control system | Expired / Lapsed | 1940-06-03 | 1942-11-03 | 0 | Details |
| US2285540A | Control system | Expired / Lapsed | 1939-07-01 | 1942-06-09 | 0 | Details |
| US2285482A | Method of and apparatus for measuring | Expired / Lapsed | 1939-02-24 | 1942-06-09 | 0 | Details |
| US2113164A | Recorder and control circuits | Expired / Lapsed | 1932-09-22 | 1938-04-05 | 0 | Details |
| US1931852A | Control method and apparatus | Expired / Lapsed | 1929-03-14 | 1933-10-24 | 0 | Details |
| US1361676A | Measuring and indicating apparatus | Expired / Lapsed | 1919-02-21 | 1920-12-07 | 0 | Details |