US2633479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separator for electric accumulators
Assignee: Individual
•
Filing: 1949-02-08
•
Granted: 1953-03-31
•
Expires: 1969-02-08
Abstract
No abstract record available.
Inventors
- 👤 Bidard Robert
- 👤 Premillieu George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:01
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/471; H01M50/474; H01M50/477; H01M50/48; H01M50/486; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB507117A
Cited
US631810A
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US636142A
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GB189921562A
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US705630A
Cited
AT29512B
Cited
US1368093A
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US1569625A
Cited
US2338735A
Cited
US2465493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |