Patent US3720403A successfully refreshed from Google Patents.
US3720403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel-injection carburetors having fuel regulator
Assignee: Individual
•
Filing: 1969-02-05
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Granted: 1973-03-13
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Expires: 1989-02-05
Abstract
Abstract A FUEL-INJECTION TYPE CARBURETOR HAVING A FUEL INJECTION VALVE ARRANGED TO OPEN RELATIVE TO THE FUEL INLET NOZZLE TO A VARYING EXTENT AS A FUNCTION OF THE RATE OF AIR FLOW THROUGH THE CARBURETOR AND INCLUDING FLEXIBLE GUIDE MEANS FOR MAINTAINING THE VALVE ALIGNED WITH THE NOZZLE WHILE PERMITTING IT TO RECIPROCATE RELATIVE THERETO. D R A W I N G
Inventors
- 👤 K Winquist
- 👤 S Backman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:01
CPC Classifications
F; F02; F02M; F02M9/00; F02M9/12; F02M9/127; F02M7/00; F02M7/12; F02M7/22
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |