US2649265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airplane with stabilizing fins
Assignee: Individual
•
Filing: 1948-07-30
•
Granted: 1953-08-18
•
Expires: 1968-07-30
Abstract
No abstract record available.
Inventors
- 👤 Charles H Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:19
CPC Classifications
B; B64; B64C; B64C39/00; B64C39/10; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB191512820A
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US1724110A
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FR717575A
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US1913169A
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GB460636A
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US2173538A
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US2260952A
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US2316885A
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US2397526A
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US2439048A
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US2417821A
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US2412646A
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US2496087A
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US2557522A
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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) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |