US3465989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular vtol aircraft
Assignee: Saucercraft Inc
•
Filing: 1966-07-14
•
Granted: 1969-09-09
•
Expires: 1986-07-14
Abstract
No abstract record available.
Inventors
- 👤 Ernest E Bowshier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:05
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0016; B64C29/0025; B64C39/00; B64C39/001; B64C39/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1868392A
Cited
US2730311A
Cited
US2728537A
Cited
US2843338A
Cited
US2953320A
Cited
FR1378993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-08 | 1973-03-10 | 1973-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-08 | 1977-03-10 | 1977-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-08 | 1981-03-10 | 1981-09-09 | $7700.00 | Window Closed / Lapsed |