Patent US2526640A successfully refreshed from Google Patents.
US2526640A
Expired / Lapsed
US
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Primary cell
Assignee: Individual
•
Filing: 1945-11-06
•
Granted: 1950-10-24
•
Expires: 1965-11-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:54
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2368697A
Cited
US1106540A
Cited
US1611153A
Cited
US2369931A
Cited
US2422046A
Cited
US2422045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |