Patent US2683381A successfully refreshed from Google Patents.
US2683381A
Expired / Lapsed
US
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Brake locking device
Assignee: Individual
•
Filing: 1952-07-31
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Granted: 1954-07-13
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Expires: 1972-07-31
Abstract
No abstract record available.
Inventors
- 👤 Vyrl E Cadwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:29
CPC Classifications
B; B60; B60T; B60T7/00; B60T7/02; B64; B64C; B64C25/00; B64C25/32; B64C25/42; B64C25/44; B64C25/48; Y; Y10; Y10S; Y10S254/00; Y10S254/05; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20213; Y10T74/2022; Y10T74/20256; Y10T74/20268; Y10T74/20274; Y10T74/20396; Y10T74/20402; Y10T74/2042; Y10T74/20426; Y10T74/20576; Y10T74/20636; Y10T74/2066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1199578A
Cited
US1503326A
Cited
US1681191A
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US1718258A
Cited
US2154929A
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US2233329A
Cited
US2443331A
Cited
US2531216A
Cited
US2535718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |