US2667935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft propeller and engine control system
Assignee: Niles Bement Pond Co
•
Filing: 1947-10-01
•
Granted: 1954-02-02
•
Expires: 1967-10-01
Abstract
No abstract record available.
Inventors
- 👤 James S Woodward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:06
CPC Classifications
B; B64; B64D; B64D31/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2205625A
Cited
GB465571A
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US2216416A
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US2217364A
Cited
US2308228A
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US2306953A
Cited
US2322303A
Cited
US2396618A
Cited
US2248245A
Cited
US2303998A
Cited
US2402065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |