Patent US2638490A successfully refreshed from Google Patents.
US2638490A
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Storage battery and lift device
Assignee: National Battery Co
•
Filing: 1947-05-07
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Granted: 1953-05-12
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Expires: 1967-05-07
Abstract
No abstract record available.
Inventors
- 👤 Almond H Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:54
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/20; H01M50/256; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44291; Y10T24/44299; Y10T24/44496; Y10T24/44504
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1559100A
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US1725905A
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US1798773A
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US1849364A
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US2016916A
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FR790890A
Cited
US2085724A
Cited
US2199229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |