Patent US5895389A successfully refreshed from Google Patents.
Patent US3164141A successfully refreshed from Google Patents.
US3164141A
Expired / Lapsed
US
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Volumetric controlled crankcase ventilation systems
Assignee: Individual
•
Filing: 1961-11-06
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Granted: 1965-01-05
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Expires: 1981-11-06
Abstract
No abstract record available.
Inventors
- 👤 Oscar F Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:53
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/04; F01M13/02; F01M13/021; F01M13/022; F01M13/023; F01M2013/0438; F02; F02B; F02B2275/00; F02B2275/34; F02B3/00; F02B3/06; Y; Y10; Y10S; Y10S55/00; Y10S55/19; Y10S55/30; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7847; Y10T137/7848; Y10T137/7869; Y10T137/7871
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-05 | 1968-07-06 | 1969-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-05 | 1972-07-06 | 1973-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-05 | 1976-07-06 | 1977-01-05 | $7700.00 | Window Closed / Lapsed |