US2647157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical storage battery
Assignee: Oldham Crompton Batteries Ltd
•
Filing: 1950-04-24
•
Granted: 1953-07-28
•
Expires: 1970-04-24
Abstract
No abstract record available.
Inventors
- 👤 Booth Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:20
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
GB190601396A
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US1171597A
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US1771216A
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GB347012A
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US1966644A
Cited
US1990976A
Cited
FR751398A
Cited
US2195212A
Cited
US2256105A
Cited
US2504608A
Cited
US2490630A
Cited
GB664775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |