US2777652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractible tandem wheel landing gear
Assignee: STROUKOFF AIRCRAFT Corp
•
Filing: 1954-02-02
•
Granted: 1957-01-15
•
Expires: 1974-02-02
Abstract
No abstract record available.
Inventors
- 👤 Grudin Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:39
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/32; B64C25/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2704674A
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US1802692A
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GB306412A
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US1847491A
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US1859624A
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US1893695A
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US2156773A
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US2333550A
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US2464972A
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US2392892A
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US2434464A
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US2416245A
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US2578200A
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US2579180A
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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) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |