US2925970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable aircraft landing element mounting
Assignee: De Havilland Aircraft of Canada Ltd
•
Filing: 1953-11-06
•
Granted: 1960-02-23
•
Expires: 1973-11-06
Abstract
No abstract record available.
Inventors
- 👤 William T Heaslip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:21
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/02; B64C25/08; B64C25/10; B64C25/18; B64C25/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1613842A
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US1770756A
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US1892064A
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US2106934A
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US2186235A
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GB485617A
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GB488059A
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GB526116A
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GB533076A
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US2315098A
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US2574404A
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US2532610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |