Patent US3968326A successfully refreshed from Google Patents.
Hovercraft Development Ltd
HovercraftActive Patents
0
Total Holdings
17
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB1203025A | Electromagnetically-propelled gas cushion vehicle | Expired / Lapsed | 1966-09-06 | — | 0 | Details |
| GB1147633A | Flexible wall structures for gas cushion vehicles | Expired / Lapsed | 1965-05-25 | — | 0 | Details |
| GB1089464A | Improvements in gas-cushion vehicles | Expired / Lapsed | 1965-02-25 | — | 0 | Details |
| GB854211A | Improvements in or relating to vehicles for travelling over… | Expired / Lapsed | 1955-12-12 | — | 0 | Details |
| US3500947A | Gas-cushion vehicles with wave restraining means for operat… | Expired / Lapsed | 1968-02-07 | 1970-03-17 | 0 | Details |
| US3409103A | Gas-cushion vehicles | Expired / Lapsed | 1966-05-04 | 1968-11-05 | 0 | Details |
| US3318404A | Air cushion center of pressure displacing means for ground … | Expired / Lapsed | 1965-04-28 | 1967-05-09 | 2 | Details |
| US3291237A | Vehicles for travelling over a surface | Expired / Lapsed | 1963-10-17 | 1966-12-13 | 2 | Details |
| US3289778A | Inflatable nozzle structure for surface effect devices | Expired / Lapsed | 1963-06-06 | 1966-12-06 | 1 | Details |
| US3272271A | Air cushion vehicles having movable cushion-containing walls | Expired / Lapsed | 1964-06-16 | 1966-09-13 | 2 | Details |
| US3269477A | Vehicles for travelling over a surface | Expired / Lapsed | 1964-03-06 | 1966-08-30 | 2 | Details |
| US3249166A | Ribbed cushion bounding walls for ground effect machines | Expired / Lapsed | 1963-12-05 | 1966-05-03 | 2 | Details |
| US3244245A | Vehicles for travelling over a surface | Expired / Lapsed | 1964-03-20 | 1966-04-05 | 2 | Details |
| US3207113A | Vehicles for operating over water | Expired / Lapsed | 1962-08-07 | 1965-09-21 | 2 | Details |
| US3182740A | Vehicles for travelling over land and/or water | Expired / Lapsed | 1963-12-10 | 1965-05-11 | 2 | Details |
| US3172494A | Skirts of flexible filamentary members for ground effect ma… | Expired / Lapsed | 1961-04-13 | 1965-03-09 | 2 | Details |
| FR1238499A | Vehicle enhancements for traveling over land or water | Expired / Lapsed | 1959-08-31 | 1960-12-02 | 0 | Details |