Patent US2471585A successfully refreshed from Google Patents.
US2471585A
Expired / Lapsed
US
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Explosion-proof battery vent and filler plug
Assignee: C and D Batteries Inc
•
Filing: 1946-03-09
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Granted: 1949-05-31
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Expires: 1966-03-09
Abstract
No abstract record available.
Inventors
- 👤 Rittenhouse John
- 👤 Melville F Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:01
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/30; H01M50/383; H01M50/394; H01M50/60; H01M50/609; H01M50/627; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190802727A
Cited
FR560087A
Cited
US2341382A
Cited
US2309331A
Cited
US2298938A
Cited
US2400228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |