Patent US2616510A successfully refreshed from Google Patents.
US2616510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor blade damper
Assignee: Boeing Helicopters Co
•
Filing: 1947-11-07
•
Granted: 1952-11-04
•
Expires: 1967-11-07
Abstract
No abstract record available.
Inventors
- 👤 Rzeczycki Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:02
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/51
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1643262A
Cited
US1948457A
Cited
US1951483A
Cited
US2048326A
Cited
US2102027A
Cited
US2318259A
Cited
US2512461A
Cited
US2465681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |