US3111138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crankcase ventilation regulator
Assignee: Johnson Products Inc
•
Filing: 1961-01-26
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Granted: 1963-11-19
•
Expires: 1981-01-26
Abstract
No abstract record available.
Inventors
- 👤 John W Humphrcys
- 👤 Morris V Dadd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:37
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/04; F01; F01M; F01M13/00; F01M13/02; F01M13/021; F01M13/022; F01M13/023; F16N; F16N2280/00; F16N2280/02; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7748; Y10T137/7749; Y10T137/7837; Y10T137/7847; Y10T137/7848
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US383877A
Cited
US2154593A
Cited
US1100761A
Cited
US1413089A
Cited
US1572842A
Cited
US2716398A
Cited
US2882006A
Cited
US2853986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-18 | 1967-05-20 | 1967-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-18 | 1971-05-20 | 1971-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-18 | 1975-05-20 | 1975-11-19 | $7700.00 | Window Closed / Lapsed |