Patent US4497395A successfully refreshed from Google Patents.
US3285356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicles for travelling over land and/or water
Assignee: Hovercraft Development Ltd
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Filing: 1965-05-06
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Granted: 1966-11-15
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Expires: 1985-05-06
Abstract
No abstract record available.
Inventors
- 👤 Cockerell Christopher Sydney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:56
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/16; B60V1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A VEHICLE OF THE TYPE ADAPTED FOR TRAVELLING OR HOVERING OVER THE SURFACE OF LAND OR WATER COMPRISING A STRUCTURE INCLUDING A MAIN BODY, MEANS CARRIED BY SAID BODY FOR FORMING AND MAINTAINING A PRESSURISED CUSHION OF GAS BETWEEN THE STRUCTURE OF THE VEHICLE AND THE SURFACE OVER WHICH THE VEHICLE IS TRAVELLING OR HOVERING, CAPABLE OF AT LEAST PARTIALLY SUPPORTING THE VEHICLE ABOVE SAID SURFACE, A FLEXIBLE WALL STRUCTURE CONSTITUTING AT LEAST PART OF THE PERIPHERAL BOUNDARY WITHIN WHICH SAID PRES-
Claim 2
Dependent Claim
82 words
A VEHICLE OF THE TYPE ADAPTED FOR TRAVELLING OR HOVERING OVER THE SURFACE OF LAND OR WATER COMPRISING A STRUCTURE INCLUDING A MAIN BODY, MEANS CARRIED BY SAID BODY FOR FORMING AND MAINTAINING A PRESSURISED CUSHION OF GAS BETWEEN THE STRUCTURE OF THE VEHICLE AND THE SURFACE OVER WHICH THE VEHICLE IS TRAVELLING OR HOVERING, CAPABLE OF AT LEAST PARTIALLY SUPPORTING THE VEHICLE ABOVE SAID SURFACE, A FLEXIBLE WALL STRUCTURE CONSTITUTING AT LEAST PART OF THE PERIPHERAL BOUNDARY WITHIN WHICH SAID PRES-
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |