US3383074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vtol aircraft
Assignee: Rolls Royce PLC
•
Filing: 1966-06-03
•
Granted: 1968-05-14
•
Expires: 1986-06-03
Abstract
No abstract record available.
Inventors
- 👤 Coplin John Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:52
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0016; B64C29/0033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3033492A
Cited
US3302907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |