US2734585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet-driven helicopter rotor power plant control system
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
•
Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:29
CPC Classifications
B; B64; B64D; B64D31/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2095991A
Cited
US2205625A
Cited
US2281987A
Cited
GB561932A
Cited
US2409177A
Cited
US2428531A
Cited
US2434726A
Cited
US2521244A
Cited
US2517150A
Cited
US2457936A
Cited
US2503048A
Cited
US2618927A
Cited
US2540190A
Cited
US2457595A
Cited
US2511348A
Cited
US2545703A
Cited
GB627117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |