Patent US3384059A successfully refreshed from Google Patents.
US3384059A
Expired / Lapsed
US
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Carburetion system with improved fuel-air ratio control system
Assignee: University of California Berkeley
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Filing: 1965-10-22
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Granted: 1968-05-21
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Richard D Kopa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:19
CPC Classifications
F; F02; F02M; F02M69/00; F02M69/08; F02D; F02D35/00; F02D35/0015; F02D35/0046; F02D35/0053; F02D35/0069; F02M69/16; F02M69/18; F02M69/20; F02M69/28; F02M69/30; F02M69/36; F02M69/42; F02M69/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1897967A
Cited
US2341257A
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US2638912A
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US2957467A
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US3078833A
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US3113561A
Cited
US3240191A
Cited
US3288445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |