Patent US2710620A successfully refreshed from Google Patents.
US2710620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety cut-off valve for fluid operated brakes
Assignee: Individual
•
Filing: 1953-01-21
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Granted: 1955-06-14
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Expires: 1973-01-21
Abstract
No abstract record available.
Inventors
- 👤 Okal O Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:57
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/28; B60T11/32; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/265; Y10T137/2655
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB333365A
Cited
US1798317A
Cited
US2313797A
Cited
US2386585A
Cited
US2534871A
Cited
US2578042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-13 | 1958-12-13 | 1959-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-13 | 1962-12-13 | 1963-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-13 | 1966-12-13 | 1967-06-14 | $7700.00 | Window Closed / Lapsed |