US2813142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-closing venting devices for electric storage batteries and the like
Assignee: Svenska Ackumulator Jungner AB
•
Filing: 1953-03-05
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Granted: 1957-11-12
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Expires: 1973-03-05
Abstract
No abstract record available.
Inventors
- 👤 Lindberg Erik Olof Henning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:42
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/36; H; H01; H01M; H01M50/00; H01M50/30; H01M50/308; H01M50/60; H01M50/609; H01M50/627; H01M50/636; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T137/00; Y10T137/0753; Y10T137/0874
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1486985A
Cited
US1992151A
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US2306974A
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US2315431A
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US2619102A
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US2682569A
Cited
US2660611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |