US3444848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel-air mixture intake systems for internal combustion engines
Assignee: Zenith Carburetter Co Ltd
•
Filing: 1966-12-07
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Granted: 1969-05-20
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Expires: 1986-12-07
Abstract
No abstract record available.
Inventors
- 👤 Geoffrey L Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:38
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/10242; F02M35/10268; F02D; F02D9/00; F02D9/08; F02D9/10; F02D9/1035; F02D9/1055; F02D9/109; F02M31/00; F02M31/02; F02M31/04; F02M31/045; F02M31/047; F02M35/1015; F02M35/10183; F02M35/104; F02M35/108; F02M35/112; F02M7/00; F02M7/12; F02M7/14; F02M7/16; F02M7/17; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |