Patent US2466635A successfully refreshed from Google Patents.
US2466635A
Expired / Lapsed
US
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Screw propeller steering and depth regulation apparatus
Assignee: BRITISH MOTOR BOAT Manufacturing Co
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Filing: 1946-02-05
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Granted: 1949-04-05
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Expires: 1966-02-05
Abstract
No abstract record available.
Inventors
- 👤 Brown Harold Percy
- 👤 Armstrong Albert George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:01
CPC Classifications
B; B63; B63H; B63H5/00; B63H5/07; B63H5/125; B63H2005/1254; B63H2005/1256; B63H25/00; B63H25/42; B63H2025/425
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR562601A
Cited
US1840948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-04 | 1952-10-04 | 1953-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-04 | 1956-10-04 | 1957-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-04 | 1960-10-04 | 1961-04-05 | $7700.00 | Window Closed / Lapsed |