Patent US1525759A successfully refreshed from Google Patents.
US1525759A
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US
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Storage battery
Assignee: ENGINEERS DEV Co
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Filing: 1920-09-18
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Granted: 1925-02-10
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Expires: 1940-09-18
Abstract
No abstract record available.
Inventors
- 👤 Frederick E Pernot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:55
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/04; H01M10/0413; H01M10/0463; H01M10/0477; H01M10/06; H01M10/12; H01M50/00; H01M50/50; H01M50/528; H01M6/00; H01M6/42; H01M6/46; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1928-02-10 | 1928-08-11 | 1929-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-02-10 | 1932-08-11 | 1933-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-02-10 | 1936-08-11 | 1937-02-10 | $7700.00 | Window Closed / Lapsed |