Patent US2685869A successfully refreshed from Google Patents.
US2685869A
Expired / Lapsed
US
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Internal-combustion engine
Assignee: Texaco Inc
•
Filing: 1948-09-21
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Granted: 1954-08-10
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Expires: 1968-09-21
Abstract
No abstract record available.
Inventors
- 👤 William N Fenney
- 👤 Reynolds Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:31
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/08; F02B19/14; F02B3/00; F02B3/02; F02B2275/00; F02B2275/42; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR730932A
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GB386785A
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US2051204A
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US2036253A
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US2061826A
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US2317536A
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US2431875A
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US2411740A
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US2431857A
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US2412821A
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US2448950A
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US2484009A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |