Litchstreet Co
LitchstreeActive Patents
0
Total Holdings
8
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4789865A | Collision avoidance system | Expired / Lapsed | 1987-10-21 | 1988-12-06 | 18 | Details |
| US4642648A | Simple passive/active proximity warning system | Expired / Lapsed | 1984-03-14 | 1987-02-10 | 50 | Details |
| US4115771A | Passive ATCRBS using signals of remote SSR | Expired / Lapsed | 1977-05-17 | 1978-09-19 | 12 | Details |
| US4027307A | Collision avoidance/proximity warning system using secondar… | Expired / Lapsed | 1975-05-09 | 1977-05-31 | 61 | Details |
| US4021802A | Collision avoidance system | Expired / Lapsed | 1975-07-29 | 1977-05-03 | 25 | Details |
| US3959793A | Proximity indication with means for computing the distance … | Expired / Lapsed | 1974-08-07 | 1976-05-25 | 24 | Details |
| US3921172A | Proximity indication with range and bearing measurements | Expired / Lapsed | 1974-06-21 | 1975-11-18 | 8 | Details |
| US3858211A | Proximity indication with range and bearing measurements | Expired / Lapsed | 1973-06-20 | 1974-12-31 | 8 | Details |