US3460485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetically-propelled vehicles
Assignee: Hovercraft Development Ltd
•
Filing: 1967-06-12
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Granted: 1969-08-12
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Expires: 1987-06-12
Abstract
No abstract record available.
Inventors
- 👤 Geoffrey John Easton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:52
CPC Classifications
H; H02; H02K; H02K41/00; H02K41/02; H02K41/025; B; B60; B60L; B60L13/00; B60L13/03; B60L13/035; B60V; B60V3/00; B60V3/02; B60V3/04; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2548614A
Cited
US3233559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |