Patent US2799255A successfully refreshed from Google Patents.
US2799255A
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Gas engine
Assignee: Cooper Bessemer Corp
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Filing: 1955-03-14
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Granted: 1957-07-16
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Expires: 1975-03-14
Abstract
No abstract record available.
Inventors
- 👤 Hewitt A Gehres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:19
CPC Classifications
F; F02; F02M; F02M21/00; F02M21/02; F02M21/0218; F02M21/0248; F02M21/0257; F02M21/026; F02M21/0269; F02B; F02B43/00; F02M21/0251; F02M21/0275; F02B2710/00; F02B2710/03; F02B2710/038; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T10/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1483619A
Cited
US1616157A
Cited
US1653825A
Cited
US2121921A
Cited
US2652039A
Cited
US2690741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |