US3545881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controllable pitch propeller with hydraulic power supply and control
Assignee: Baldwin Lima Hamilton Corp
•
Filing: 1968-07-24
•
Granted: 1970-12-08
•
Expires: 1988-07-24
Abstract
No abstract record available.
Inventors
- 👤 Albert M Naulty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:32
CPC Classifications
B; B63; B63H; B63H3/00; B63H3/06; B63H3/08; B63H2003/088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2023785A
Cited
US2346979A
Cited
US2404290A
Cited
US2812026A
Cited
US3053267A
Cited
US3004609A
Cited
US3156301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |