Patent US2477569A successfully refreshed from Google Patents.
US2477569A
Expired / Lapsed
US
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Automatically releasing aircraft towing gear
Assignee: Individual
•
Filing: 1944-06-14
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Granted: 1949-08-02
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Expires: 1964-06-14
Abstract
No abstract record available.
Inventors
- 👤 John C Beirise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:20
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/04; B64F1/08; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3913; Y10T403/00; Y10T403/59; Y10T403/599
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |