US2640865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage battery
Assignee: Individual
•
Filing: 1948-07-27
•
Granted: 1953-06-02
•
Expires: 1968-07-27
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:08
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/04; H01M10/0468; H01M10/0413; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/80; H01M50/00; H01M50/50; H01M50/531; 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)
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US438827A
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US362640A
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US1030650A
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US726272A
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US882144A
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US1269778A
Cited
US2075492A
Cited
US2213128A
Cited
US2247091A
Cited
US2251913A
Cited
GB531774A
Cited
US2379374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |