US2767237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric storage battery
Assignee: Electro-Acid Corp
•
Filing: 1953-04-14
•
Granted: 1956-10-16
•
Expires: 1973-04-14
Abstract
No abstract record available.
Inventors
- 👤 Gritman Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:38
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/06; H01M10/12; H01M10/16; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1354256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |