US2934585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage batteries
Assignee: Gould National Batteries Inc
•
Filing: 1957-12-19
•
Granted: 1960-04-26
•
Expires: 1977-12-19
Abstract
No abstract record available.
Inventors
- 👤 Harold E Zahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:14
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/463; H01M50/466; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49114
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US761345A
Cited
US1012908A
Cited
US1990976A
Cited
US2157629A
Cited
US2589681A
Cited
US2851511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |