US2443112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact structure for electrolytic cells
Assignee: American Smelting and Refining Co
•
Filing: 1942-05-30
•
Granted: 1948-06-08
•
Expires: 1962-05-30
Abstract
No abstract record available.
Inventors
- 👤 Morin Fernando Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:14
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/60; C25B9/63; C25C; C25C7/00; C25C7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US315266A
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GB189822884A
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US789353A
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US1745348A
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DE513290C
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US2115004A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |