US2594879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deferred-action battery
Assignee: GTE Sylvania Inc
•
Filing: 1948-10-09
•
Granted: 1952-04-29
•
Expires: 1968-10-09
Abstract
No abstract record available.
Inventors
- 👤 James N Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:32
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/30; H01M6/32; H01M6/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1310586A
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GB189517269A
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US1218847A
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US1401671A
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US1509209A
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US1566927A
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US1815508A
Cited
GB336844A
Cited
US2144574A
Cited
US2404144A
Cited
US2441896A
Cited
US2433024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |