Johnson Laboratories Inc
Johnson LaActive Patents
0
Total Holdings
21
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2368857A | High-frequency inductance unit | Expired / Lapsed | 1943-06-24 | 1945-02-06 | 0 | Details |
| US2298629A | Radio receiving system | Expired / Lapsed | 1940-06-10 | 1942-10-13 | 0 | Details |
| US2258652A | Mounting device for adjustable inductors | Expired / Lapsed | 1940-06-05 | 1941-10-14 | 0 | Details |
| US2244177A | Signal collecting system for radio receivers | Expired / Lapsed | 1940-02-19 | 1941-06-03 | 0 | Details |
| US2226822A | Variable inductance mechanism | Expired / Lapsed | 1938-03-21 | 1940-12-31 | 0 | Details |
| US2213328A | Permeability tuning | Expired / Lapsed | 1937-11-26 | 1940-09-03 | 0 | Details |
| US2210303A | High frequency generator | Expired / Lapsed | 1937-06-17 | 1940-08-06 | 0 | Details |
| US2192619A | Variable inductance | Expired / Lapsed | 1937-06-03 | 1940-03-05 | 0 | Details |
| US2190048A | Permeability-tuned oscillator tracking arrangement | Expired / Lapsed | 1939-04-10 | 1940-02-13 | 0 | Details |
| US2174641A | Muting system | Expired / Lapsed | 1937-08-09 | 1939-10-03 | 0 | Details |
| US2162335A | Vacuum tube sweep circuit | Expired / Lapsed | 1936-02-10 | 1939-06-13 | 0 | Details |
| US2145483A | Cathode ray oscilloscope | Expired / Lapsed | 1934-11-12 | 1939-01-31 | 0 | Details |
| US2113603A | High-frequency inductance device | Expired / Lapsed | 1931-05-07 | 1938-04-12 | 0 | Details |
| US2111490A | Intermediate-frequency coupling unit | Expired / Lapsed | 1935-08-06 | 1938-03-15 | 0 | Details |
| US2106226A | Coupling means for permeabilitytuned circuits | Expired / Lapsed | 1935-06-26 | 1938-01-25 | 0 | Details |
| US2106253A | Intermediate-frequency coupling device | Expired / Lapsed | 1933-11-11 | 1938-01-25 | 0 | Details |
| US2095420A | Variable inductances for tuned high-frequency circuits | Expired / Lapsed | 1934-08-30 | 1937-10-12 | 0 | Details |
| US2005203A | Variable inductance device | Expired / Lapsed | 1932-05-04 | 1935-06-18 | 0 | Details |
| US2004368A | Radio power supply system | Expired / Lapsed | 1933-08-24 | 1935-06-11 | 0 | Details |
| US1982690A | Selective radio circuit | Expired / Lapsed | 1933-03-08 | 1934-12-04 | 0 | Details |
| US1978599A | Variable inductance device | Expired / Lapsed | 1931-07-01 | 1934-10-30 | 0 | Details |