US3712835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reserve cell with modular construction
Assignee: Duracell Inc USA
•
Filing: 1970-10-23
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Granted: 1973-01-23
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Expires: 1990-10-23
Abstract
Abstract A reserve cell having a housing with two compartments separated by a central partition, with cell electrodes to be inserted into one compartment, and an electrolyte vial assembly into the second compartment, with associated means for fracturing the vial and forcing the electrolyte into the first mentioned compartment.
Inventors
- 👤 G Kaye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:33
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/30; H01M6/36; H01M6/38
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |