Patent US2679549A successfully refreshed from Google Patents.
US2679549A
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US
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Apparatus for heating cold batteries
Assignee: Fox Products Co
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Filing: 1951-04-17
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Granted: 1954-05-25
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Expires: 1971-04-17
Abstract
No abstract record available.
Inventors
- 👤 Rezek Gerard
- 👤 Lewis A Medlar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:45
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/60; H01M10/63; H01M10/637; H01M10/61; H01M10/615; H01M10/62; H01M10/625; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10S; Y10S320/00; Y10S320/22; Y10S320/23; Y10S320/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |