US1117185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic cell.
Assignee: M O HACKETT
•
Filing: 1914-04-27
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Granted: 1914-11-17
•
Expires: 1934-04-27
Abstract
No abstract record available.
Inventors
- 👤 Alvah M Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:55
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/17; C25B9/19; C25B1/00; C25B1/01; C25B1/02; C25B1/04; C25B15/00; C25B15/08; C25B15/083
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) | 1917-11-16 | 1918-05-18 | 1918-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-11-16 | 1922-05-18 | 1922-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-11-16 | 1926-05-18 | 1926-11-17 | $7700.00 | Window Closed / Lapsed |