Patent US2657537A successfully refreshed from Google Patents.
US2657537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Master cylinder with compensating valve
Assignee: Motors Liquidation Co
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Filing: 1950-10-26
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Granted: 1953-11-03
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Expires: 1970-10-26
Abstract
No abstract record available.
Inventors
- 👤 Wilbur J Oakley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:24
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/16; B60T11/22; B60T11/232
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1764179A
Cited
GB410243A
Cited
US1983884A
Cited
US2114991A
Cited
US2258257A
Cited
US2224125A
Cited
US2281330A
Cited
US2232113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |