US2883443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead-acid storage battery
Assignee: Individual
•
Filing: 1956-07-13
•
Granted: 1959-04-21
•
Expires: 1976-07-13
Abstract
No abstract record available.
Inventors
- 👤 Ruetschi Karl
- 👤 Ruetschi Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:55
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/14; H01M4/16; H01M4/18; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US285807A
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US544673A
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US621048A
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US700210A
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US711537A
Cited
US1522613A
Cited
US2256105A
Cited
US2422130A
Cited
US2503179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |