Patent US785167A successfully refreshed from Google Patents.
US785167A
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Process of separating and refining complex ores.
Assignee: AMERICAN REDUCTION Co
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Filing: 1904-01-15
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Granted: 1905-03-21
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Expires: 1924-01-15
Abstract
No abstract record available.
Inventors
- 👤 Eric Hedburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:08
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/02; C22B3/00; C22B3/20; C22B3/22; 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) | 1908-03-20 | 1908-09-19 | 1909-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-03-20 | 1912-09-19 | 1913-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-03-20 | 1916-09-19 | 1917-03-21 | $7700.00 | Window Closed / Lapsed |