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US3483568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic metal extraction
Assignee: Continental Copper and Steel Industries Inc
•
Filing: 1966-12-12
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Granted: 1969-12-16
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Expires: 1986-12-12
Abstract
No abstract record available.
Inventors
- 👤 Allen K Andersen
- 👤 Vsevolod Archipov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:51
CPC Classifications
C; C25; C25C; C25C1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US883170A
Cited
GB191503569A
Cited
US2970096A
Cited
GB905749A
Cited
US3148130A
Cited
US3288692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |