US3065935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical take-off aircraft
Assignee: Individual
•
Filing: 1957-09-17
•
Granted: 1962-11-27
•
Expires: 1977-09-17
Abstract
No abstract record available.
Inventors
- 👤 Dubbury John
- 👤 Frost John Carver Meadows
- 👤 Earl Thomas Desmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:00
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0041; B64C29/0066; B64C39/00; B64C39/001
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1724226A
Cited
US2444318A
Cited
US2777649A
Cited
US2807428A
Cited
US2718364A
Cited
GB770874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-26 | 1966-05-28 | 1966-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-26 | 1970-05-28 | 1970-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-26 | 1974-05-28 | 1974-11-27 | $7700.00 | Window Closed / Lapsed |