Patent US2857584A successfully refreshed from Google Patents.
US2857584A
Expired / Lapsed
US
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Safety mechanism for hydraulic braking systems
Assignee: SEKESCO Co Inc
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Filing: 1956-11-14
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Granted: 1958-10-21
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Expires: 1976-11-14
Abstract
No abstract record available.
Inventors
- 👤 Levi D Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:20
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/16; B60T11/20; B60T11/203; B60T11/206
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2131459A
Cited
US2375415A
Cited
US2353304A
Cited
US2403939A
Cited
US2694191A
Cited
US2774958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |