US3470025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Third-electrode rechargeable alkaline battery cells and associated battery circuits
Assignee: Sonotone Corp
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Filing: 1967-11-08
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Granted: 1969-09-30
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Expires: 1987-11-08
Abstract
No abstract record available.
Inventors
- 👤 David Yehiely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:15
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/18; H01; H01M; H01M10/00; H01M10/42; H02J; H02J7/00; H02J7/90; H02J7/933; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |