US3533713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor locking device
Assignee: Lockheed Martin Corp
•
Filing: 1968-04-01
•
Granted: 1970-10-13
•
Expires: 1988-04-01
Abstract
No abstract record available.
Inventors
- 👤 Moises Salmun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:20
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32; B64C27/322
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2396038A
Cited
US2471681A
Cited
US2465674A
Cited
US2481747A
Cited
US2614640A
Cited
US2717653A
Cited
US2928478A
Cited
GB958536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |