Patent US1426703A successfully refreshed from Google Patents.
US1426703A
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US
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Electrolytic treatment of ores containing zinc, cadmium, and copper
Assignee: Electrolytic Zinc Company of Australasia Ltd
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Filing: 1920-03-16
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Granted: 1922-08-22
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Expires: 1940-03-16
Abstract
No abstract record available.
Inventors
- 👤 Avery David
- 👤 Royale H Stevens
- 👤 Roland T D Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:11
CPC Classifications
C; C22; C22B; C22B17/00; C22B17/04; C22B19/00; C22B19/20; C22B19/22; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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) | 1925-08-21 | 1926-02-20 | 1926-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-08-21 | 1930-02-20 | 1930-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-08-21 | 1934-02-20 | 1934-08-22 | $7700.00 | Window Closed / Lapsed |