US2660252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable pitch screw propeller articulated blade mounting
Assignee: Office National d'Études et de Recherches Aérospatiales
•
Filing: 1947-05-01
•
Granted: 1953-11-24
•
Expires: 1967-05-01
Abstract
No abstract record available.
Inventors
- 👤 Doussain Robert
- 👤 Bousson Robert
- 👤 Perrier Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:45
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/02; B64C11/04; B64C11/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1114691A
Cited
US1145923A
Cited
FR563529A
Cited
FR568951A
Cited
US1973573A
Cited
US1797215A
Cited
US1974074A
Cited
US2008830A
Cited
US2036234A
Cited
US1927592A
Cited
US2121345A
Cited
US2125617A
Cited
US2234196A
Cited
US2163482A
Cited
US2382431A
Cited
GB496750A
Cited
GB500679A
Cited
US2319335A
Cited
US2394460A
Cited
US2365357A
Cited
US2430767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |