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US1841998A
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US
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Electric accumulator
Assignee: AMERICAN WILDERMAN POROUS EBON
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Filing: 1929-10-31
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Granted: 1932-01-19
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Expires: 1949-10-31
Abstract
No abstract record available.
Inventors
- 👤 Wilderman Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:13
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/414; H01M50/489; H01M50/491; Y; Y02; Y02E; Y02E60/00; Y02E60/10
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) | 1935-01-18 | 1935-07-20 | 1936-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-01-18 | 1939-07-20 | 1940-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-01-18 | 1943-07-20 | 1944-01-19 | $7700.00 | Window Closed / Lapsed |