Patent US3697655A successfully refreshed from Google Patents.
US2858823A
Expired / Lapsed
US
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Liquid heating device for warming engines and the like
Assignee: Individual
•
Filing: 1956-05-07
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Granted: 1958-11-04
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Expires: 1976-05-07
Abstract
No abstract record available.
Inventors
- 👤 Vern V Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:25
CPC Classifications
F; F02; F02N; F02N19/00; F02N19/02; F02N19/04; F02N19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1866015A
Cited
FR884163A
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US2414214A
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US2533881A
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US2623511A
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US2661015A
Cited
US2737169A
Cited
US2681052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |