Patent US2851259A successfully refreshed from Google Patents.
US2851259A
Expired / Lapsed
US
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Idle vent valve
Assignee: Motors Liquidation Co
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Filing: 1956-04-23
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Granted: 1958-09-09
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Expires: 1976-04-23
Abstract
No abstract record available.
Inventors
- 👤 Olson Elmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:44
CPC Classifications
F; F02; F02M; F02M1/00; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/4392; F02M2700/4395; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7293
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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |