US741592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic diaphragm.
Assignee: ROBERTS BATTERY Co
•
Filing: 1903-03-07
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Granted: 1903-10-13
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Expires: 1923-03-07
Abstract
No abstract record available.
Inventors
- 👤 Isaiah L Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:33
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; H01M10/0525; 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) | 1906-10-12 | 1907-04-13 | 1907-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-10-12 | 1911-04-13 | 1911-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-10-12 | 1915-04-13 | 1915-10-13 | $7700.00 | Window Closed / Lapsed |