US2471118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable engine mount and accessory coupling
Assignee: North American Aviation Corp
•
Filing: 1943-12-11
•
Granted: 1949-05-24
•
Expires: 1963-12-11
Abstract
No abstract record available.
Inventors
- 👤 Charles E Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:26
CPC Classifications
F; F16; F16L; F16L39/00; F16L37/00; F16L37/56; F16M; F16M7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US506842A
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US1581539A
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US1645964A
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US1648875A
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US1892065A
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US1920598A
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US2108307A
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US2099490A
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US2074533A
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US2192893A
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US2379315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |