Patent US3398026A successfully refreshed from Google Patents.
US3398026A
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US
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Electrochemical cell incorporating a unidirectional valve
Assignee: Yardney International Corp
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Filing: 1966-08-01
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Granted: 1968-08-20
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Expires: 1986-08-01
Abstract
No abstract record available.
Inventors
- 👤 Andre Henri Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:23
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/30; H01M50/317; H01M50/325; H01M50/333; H01M50/308; H01M50/394; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4643; Y10T137/4666
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB166186A
Cited
US2451087A
Cited
GB613344A
Cited
US2571754A
Cited
US2757223A
Cited
US2770666A
Cited
US3172782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |