US2492206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead perchloric acid primary cell
Assignee: Individual
•
Filing: 1943-01-19
•
Granted: 1949-12-27
•
Expires: 1963-01-19
Abstract
No abstract record available.
Inventors
- 👤 Joseph C White
- 👤 John H Baldwin
- 👤 Edward J Peebles
- 👤 Wilson H Power
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:42
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/14; H01M4/64; H01M4/66; H01M4/661; H01M6/00; H01M6/04; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US368190A
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US396769A
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US408367A
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US441959A
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GB189518036A
Cited
US759065A
Cited
US773961A
Cited
US900502A
Cited
US1425163A
Cited
US1826724A
Cited
GB456082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |