Patent US2615933A successfully refreshed from Google Patents.
US2615933A
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Battery heating system
Assignee: Individual
•
Filing: 1949-09-29
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Granted: 1952-10-28
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Expires: 1969-09-29
Abstract
No abstract record available.
Inventors
- 👤 David J Carlson
- 👤 Harold T Decot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:27
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/60; H01M10/61; H01M10/615; H01M10/65; H01M10/655; H01M10/6551; H01M10/6554; H01M10/6556; H01M10/6595; H01M10/613; H01M10/654; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR823048A
Cited
US982493A
Cited
FR596999A
Cited
US1615166A
Cited
US2273244A
Cited
US2282923A
Cited
US2412898A
Cited
US2418792A
Cited
FR912338A
Cited
US2510235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |