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US2691968A
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Two-stroke internal-combustion engine and method of operating same
Assignee: Texaco Inc
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Filing: 1952-04-24
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Granted: 1954-10-19
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Expires: 1972-04-24
Abstract
No abstract record available.
Inventors
- 👤 Everett M Barber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:34
CPC Classifications
F; F02; F02B; F02B25/00; F02B25/02; F02B25/04; F02B25/08; F02B3/00; F02B3/02; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B2275/00; F02B2275/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB147730A
Cited
US1515391A
Cited
US2048223A
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US2096327A
Cited
US2137344A
Cited
US2484009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |