Patent US2275612A successfully refreshed from Google Patents.
Patent US3034781A successfully refreshed from Google Patents.
Patent US4095195A successfully refreshed from Google Patents.
Patent US4001009A successfully refreshed from Google Patents.
Patent US2877854A successfully refreshed from Google Patents.
US2877854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchrophaser resetting mechanism for variable pitch aircraft propellers
Assignee: RTX Corp
•
Filing: 1955-12-27
•
Granted: 1959-03-17
•
Expires: 1975-12-27
Abstract
No abstract record available.
Inventors
- 👤 Charles B Brahm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:48
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/46; B64C11/50; H; H02; H02P; H02P5/00; H02P5/46; H02P5/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2431687A
Cited
US2482812A
Cited
US2517703A
Cited
US2673309A
Cited
US2513222A
Cited
US2747141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |