US2880261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage battery with flush secondary cover
Assignee: Individual
•
Filing: 1956-02-14
•
Granted: 1959-03-31
•
Expires: 1976-02-14
Abstract
No abstract record available.
Inventors
- 👤 Owen G Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:37
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/50; H01M50/528; H01M50/10; H01M50/147; H01M50/166; H01M50/171; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1983507A
Cited
US1973250A
Cited
US2186148A
Cited
US2232800A
Cited
US2303622A
Cited
US2672497A
Cited
US2637758A
Cited
US2704781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |