US2930191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-fuel control in prevaporizer type combustion chambers
Assignee: Phillips Petroleum Co
•
Filing: 1953-01-29
•
Granted: 1960-03-29
•
Expires: 1973-01-29
Abstract
No abstract record available.
Inventors
- 👤 Robert M Schirmer
- 👤 Ellsworth H Fromm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:56
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/26; F23R3/28; F23R3/30; F23R3/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB339314A
Cited
US2005832A
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GB407920A
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US2111484A
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US2418712A
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US2445466A
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GB619353A
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US2661794A
Cited
GB670187A
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US2655787A
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US2637975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |