US2915577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Annular permanently sealed alkaline accumulator
Assignee: Accumulatoren Fabrik AG
•
Filing: 1957-11-12
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Granted: 1959-12-01
•
Expires: 1977-11-12
Abstract
No abstract record available.
Inventors
- 👤 Bronstert Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:06
CPC Classifications
G; G04; G04C; G04C10/00; H; H01; H01M; H01M10/00; H01M10/24; H01M10/28; H01M10/34; H01M4/00; H01M4/02; H01M2004/025; 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)
US338770A
Cited
US1677032A
Cited
US1774037A
Cited
US2536699A
Cited
US2662366A
Cited
US2865163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |