Patent US2375718A successfully refreshed from Google Patents.
US2375718A
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US
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Crankcase air-pressure control means
Assignee: Fairbanks Morse and Co
•
Filing: 1943-04-23
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Granted: 1945-05-08
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Expires: 1963-04-23
Abstract
No abstract record available.
Inventors
- 👤 Walter G Winkels
- 👤 Thomas W Ashcroft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:48
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/005; F01; F01M; F01M13/00; F01M13/04; F02B1/00; F01M2013/0438; F02B2700/00; F02B2700/02; F02B2700/023; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-05-07 | 1948-11-06 | 1949-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-05-07 | 1952-11-06 | 1953-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-05-07 | 1956-11-06 | 1957-05-08 | $7700.00 | Window Closed / Lapsed |