National Co Inc
National CActive Patents
0
Total Holdings
7
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3167772A | Collision avoidance system | Expired / Lapsed | 1962-07-23 | 1965-01-26 | 2 | Details |
| US3128465A | Timing synchronization by radio frequency communication | Expired / Lapsed | 1961-07-27 | 1964-04-07 | 2 | Details |
| US3107285A | Temperature control system | Expired / Lapsed | 1960-06-15 | 1963-10-15 | 2 | Details |
| US3008043A | Communications receiver | Expired / Lapsed | 1959-06-22 | 1961-11-07 | 0 | Details |
| US2510681A | Radio apparatus | Expired / Lapsed | 1946-06-21 | 1950-06-06 | 0 | Details |
| US2351604A | Inductance coil | Expired / Lapsed | 1941-01-18 | 1944-06-20 | 0 | Details |
| US2205146A | Radio and like socket | Expired / Lapsed | 1937-12-08 | 1940-06-18 | 0 | Details |