US2936972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller sustained aircraft
Assignee: Individual
•
Filing: 1954-10-08
•
Granted: 1960-05-17
•
Expires: 1974-10-08
Abstract
No abstract record available.
Inventors
- 👤 Zinavage John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:51
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/04; B64C27/06; B64C27/20; B64C39/00; B64C39/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR1047657A
Cited
US910488A
Cited
US1794923A
Cited
US1822386A
Cited
US2507053A
Cited
US2567392A
Cited
US2592971A
Cited
US2543965A
Cited
US2718364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |