US2554774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damper for rotary wing aircraft
Assignee: RTX Corp
•
Filing: 1945-09-25
•
Granted: 1951-05-29
•
Expires: 1965-09-25
Abstract
No abstract record available.
Inventors
- 👤 Michel D Buivid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:31
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/51
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US700162A
Cited
US1067444A
Cited
US1614657A
Cited
US1948457A
Cited
US2046889A
Cited
US2216163A
Cited
US2250826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |