Patent US3439488A successfully refreshed from Google Patents.
US3537902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-sealed type storage battery
Assignee: Yuasa Corp
•
Filing: 1965-08-26
•
Granted: 1970-11-03
•
Expires: 1985-08-26
Abstract
No abstract record available.
Inventors
- 👤 Kazuo Murata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:06
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/34; H01M50/00; H01M50/30; H01M50/383; H01M50/392; H01M50/394; H01M50/317; H01M50/325; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB190000466A
Cited
US1452806A
Cited
US1486430A
Cited
US1583648A
Cited
FR560087A
Cited
US2104973A
Cited
US2317711A
Cited
US2394333A
Cited
US2542527A
Cited
US2437145A
Cited
US2578027A
Cited
DE877785C
Cited
US2790570A
Cited
US2928889A
Cited
US2926211A
Cited
US3080440A
Cited
US3159508A
Cited
US3096216A
Cited
US3351497A
Cited
US3282740A
Cited
US3360403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |