US2632784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venting primary battery
Assignee: Union Carbide Corp
•
Filing: 1950-03-29
•
Granted: 1953-03-24
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Expires: 1970-03-29
Abstract
No abstract record available.
Inventors
- 👤 Paul A Marsal
- 👤 Russell P Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:47
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/30; H01M50/394; H01M6/00; H01M6/42; H01M6/46; H01M50/10; H01M50/102; H01M50/103; Y; Y10; Y10S; Y10S220/00; Y10S220/27
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1487494A
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US1855677A
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US1969630A
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GB482363A
Cited
US2272969A
Cited
US2262836A
Cited
US2307764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |