US3485672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric current producing cell
Assignee: Individual
•
Filing: 1967-09-19
•
Granted: 1969-12-23
•
Expires: 1987-09-19
Abstract
No abstract record available.
Inventors
- 👤 Samuel Ruben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:53
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/489; H01M50/491; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2666802A
Cited
US2678343A
Cited
US2788383A
Cited
US2740821A
Cited
US2903497A
Cited
US3170820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |