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US2704058A
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Internal-combustion engine decarbonizer
Assignee: Individual
•
Filing: 1952-02-11
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Granted: 1955-03-15
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Expires: 1972-02-11
Abstract
No abstract record available.
Inventors
- 👤 Earl B Case
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:22
CPC Classifications
F; F02; F02M; F02M1/00; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/434; F02M2700/4342; F02M2700/4345
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1142779A
Cited
US1051690A
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US1091843A
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US1208598A
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US1569455A
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US1923357A
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US2023024A
Cited
US2188175A
Cited
US2408846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-14 | 1958-09-13 | 1959-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-14 | 1962-09-13 | 1963-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-14 | 1966-09-13 | 1967-03-15 | $7700.00 | Window Closed / Lapsed |