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US3795543A
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US
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Bi-polar lead-acid storage battery
Assignee: Motors Liquidation Co
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Filing: 1972-06-29
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Granted: 1974-03-05
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Expires: 1992-06-29
Abstract
Abstract A bi-polar, mat-immobilized-electrolyte, lead-acid storage battery having hydrogen relief ports through the negative plate to reduce hydrogen film ports through the negative plate to reduce hydrogen film polarization of the negative plate.
Inventors
- 👤 D Poe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:29
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/06; H01M10/18; H01M50/00; H01M50/30; H01M50/394; 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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |