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Patent US2433989A successfully refreshed from Google Patents.
US2433989A
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US
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Means for automatically supplying distilled water to storage batteries
Assignee: Individual
•
Filing: 1946-10-22
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Granted: 1948-01-06
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Expires: 1966-10-22
Abstract
No abstract record available.
Inventors
- 👤 Hans J Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:55
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/60; H01M50/609; H01M50/627; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T137/00; Y10T137/4673; Y10T137/4757; Y10T137/4774; Y10T137/7287; Y10T137/7498; Y10T137/7501
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1506172A
Cited
US2046776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-05 | 1951-07-07 | 1952-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-05 | 1955-07-07 | 1956-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-05 | 1959-07-07 | 1960-01-06 | $7700.00 | Window Closed / Lapsed |