US814692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mercurial alkaline process.
Assignee: AMERICAN ELECTROLYTIC Co
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Filing: 1905-07-06
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Granted: 1906-03-13
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Expires: 1925-07-06
Abstract
No abstract record available.
Inventors
- 👤 Willis E Harmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:46
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/34; C25B1/46
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) | 1909-03-12 | 1909-09-11 | 1910-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-03-12 | 1913-09-11 | 1914-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-03-12 | 1917-09-11 | 1918-03-13 | $7700.00 | Window Closed / Lapsed |