Patent US3532550A successfully refreshed from Google Patents.
US3532550A
Expired / Lapsed
US
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Fuel cell with alternately folded sheet electrode
Assignee: Texas Instruments Inc
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Filing: 1968-04-25
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Granted: 1970-10-06
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Expires: 1988-04-25
Abstract
No abstract record available.
Inventors
- 👤 James K Truitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:41
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/8605; H01M4/8626; H01M8/00; H01M8/24; H01M8/241; H01M8/244; H01M8/2465; H01M8/2483; H01M8/2484; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
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) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |