US2604174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor control mechanism for rotary wing aircraft
Assignee: Individual
•
Filing: 1946-01-08
•
Granted: 1952-07-22
•
Expires: 1966-01-08
Abstract
No abstract record available.
Inventors
- 👤 Richard M Worrel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:23
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/54
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1274391A
Cited
US1870928A
Cited
DE610434C
Cited
US2133043A
Cited
US2216163A
Cited
US2392341A
Cited
US2394846A
Cited
US2393882A
Cited
US2448073A
Cited
US2425651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |