US3475221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric storage battery which provides two voltage sources
Assignee: ESB Inc
•
Filing: 1966-09-15
•
Granted: 1969-10-28
•
Expires: 1986-09-15
Abstract
No abstract record available.
Inventors
- 👤 Howard J Jordan
- 👤 Louis Zednik Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:23
CPC Classifications
H; H01; H01M; H01M16/00; H01M10/00; H01M10/06; H01M10/12; H01M10/122; 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)
US3200014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |