Patent US2478173A successfully refreshed from Google Patents.
US2478173A
Expired / Lapsed
US
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Safety device for aircraft controls
Assignee: Individual
•
Filing: 1943-06-03
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Granted: 1949-08-09
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Expires: 1963-06-03
Abstract
No abstract record available.
Inventors
- 👤 William E Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:47
CPC Classifications
B; B64; B64C; B64C13/00; B64C13/02; B64C13/04; B64C13/12; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20213
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1827933A
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US1968554A
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US1821581A
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US2008693A
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US2079824A
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US2153088A
Cited
US2130559A
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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) | 1952-08-08 | 1953-02-07 | 1953-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-08 | 1957-02-07 | 1957-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-08 | 1961-02-07 | 1961-08-09 | $7700.00 | Window Closed / Lapsed |