Patent US1764052A successfully refreshed from Google Patents.
Patent US2739656A successfully refreshed from Google Patents.
US2739656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient variable pitch rotor blade mount
Assignee: Individual
•
Filing: 1952-06-25
•
Granted: 1956-03-27
•
Expires: 1972-06-25
Abstract
No abstract record available.
Inventors
- 👤 Jr William Heyl Raser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:15
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |