US3512481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air supported and air propelled vehicle racers
Assignee: Individual
•
Filing: 1967-09-18
•
Granted: 1970-05-19
•
Expires: 1987-09-18
Abstract
No abstract record available.
Inventors
- 👤 William R Hershey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:46
CPC Classifications
A; A63; A63H; A63H18/00; A63H18/002; A63F; A63F9/00; A63F9/14; A63H33/00; A63H33/40; B; B60; B60V; B60V3/00; B60V3/02; B60V3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |