Patent US2924893A successfully refreshed from Google Patents.
US2924893A
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US
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Flight training apparatus
Assignee: Communications Patents Ltd
•
Filing: 1955-04-19
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Granted: 1960-02-16
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Expires: 1975-04-19
Abstract
No abstract record available.
Inventors
- 👤 Albert E Cutler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:02
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/30; G09B9/32; G09B9/326
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2307840A
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US2352101A
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US2671970A
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US2502834A
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US2536718A
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US2518419A
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US2694869A
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US2711593A
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US2662305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |