US3131094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolyte retracting paper spacer for spin activated batteries
Assignee: Individual
•
Filing: 1961-06-21
•
Granted: 1964-04-28
•
Expires: 1981-06-21
Abstract
No abstract record available.
Inventors
- 👤 Clark C Cleveland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:03
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)
US701253A
Cited
US2981778A
Cited
FR1091667A
Cited
US2847494A
Cited
FR1233509A
Cited
US2985702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |