US3544374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell with d.c. potential means and method of operating same
Assignee: Atlantic Richfield Co
•
Filing: 1966-05-25
•
Granted: 1970-12-01
•
Expires: 1986-05-25
Abstract
No abstract record available.
Inventors
- 👤 Alfred F D Alessandro
- 👤 Harold Shalit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:05
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/14; H01M8/141; H01M8/04; H01M8/04223; H01M8/04225; H01M8/04228; H01M8/04298; H01M8/043; H01M8/04302; H01M8/04303; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3121031A
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US3134697A
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US3220937A
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US3337369A
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US3259523A
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US3080304A
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GB973810A
Cited
FR1383637A
Cited
US3407094A
Cited
US3407095A
Cited
US3446674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |