Patent US1117879A successfully refreshed from Google Patents.
US1117879A
Expired / Lapsed
US
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Electrolytic cell.
Assignee: Individual
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Filing: 1914-04-20
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Granted: 1914-11-17
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Expires: 1934-04-20
Abstract
No abstract record available.
Inventors
- 👤 Frank Mcdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:49
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/70; C25B9/005; C25B11/00; C25B11/02; C25B11/033; C25B9/30; C25B9/303
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 |