US2696957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Landing and launching system for aircraft
Assignee: Individual
•
Filing: 1948-04-27
•
Granted: 1954-12-14
•
Expires: 1968-04-27
Abstract
No abstract record available.
Inventors
- 👤 Brown Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:41
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/02; B64F1/029; Y; Y10; Y10S; Y10S254/00; Y10S254/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2419438A
Cited
US1806992A
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AT51939B
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CH91454A
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US1843640A
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US1908408A
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US1779168A
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US1789653A
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US2064599A
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US2404381A
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US1997945A
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US2197299A
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US2240947A
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US2402918A
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US2376374A
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US2394496A
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US2433893A
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US2380105A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |