Patent US1217573A successfully refreshed from Google Patents.
US1217573A
Expired / Lapsed
US
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Separator for storage-battery couples.
Assignee: JOHN P MENTZER
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Filing: 1916-01-11
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Granted: 1917-02-27
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Expires: 1936-01-11
Abstract
No abstract record available.
Inventors
- 👤 Walter A Crowdus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:43
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/429; H01M50/4295; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1920-02-27 | 1920-08-28 | 1921-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-02-27 | 1924-08-28 | 1925-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-02-27 | 1928-08-28 | 1929-02-27 | $7700.00 | Window Closed / Lapsed |