Patent US2838035A successfully refreshed from Google Patents.
US2838035A
Expired / Lapsed
US
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Internal combustion engine
Assignee: CHEMINOL Corp
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Filing: 1956-02-01
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Granted: 1958-06-10
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Expires: 1976-02-01
Abstract
No abstract record available.
Inventors
- 👤 Henry T M Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:48
CPC Classifications
F; F02; F02B; F02B9/00; F02B9/06; F02B75/00; F02B75/34; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1169891A
Cited
US1531066A
Cited
US1520620A
Cited
US1773413A
Cited
US2119121A
Cited
DE653148C
Cited
US2477712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |