Patent US2790630A successfully refreshed from Google Patents.
US2790630A
Expired / Lapsed
US
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Fuel feed for multi-stage carburetors
Assignee: ACF Industries Inc
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Filing: 1954-03-23
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Granted: 1957-04-30
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Expires: 1974-03-23
Abstract
No abstract record available.
Inventors
- 👤 James F Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:20
CPC Classifications
F; F02; F02M; F02M1/00; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/4304; F02M2700/4311
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2420925A
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US2452698A
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US2640472A
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US2647502A
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US1979834A
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US2242825A
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US2315183A
Cited
US2313258A
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US2609187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |