US1051494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating ores in preparation for magnetic separation.
Assignee: CAMPBELL MAGNETIC SEPARATING Co
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Filing: 1911-01-12
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Granted: 1913-01-28
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Expires: 1931-01-12
Abstract
No abstract record available.
Inventors
- 👤 James B Etherington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:14
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/02; E01C19/05; F; F27; F27B; F27B7/00; F27B7/14; F27B7/16; F27B7/167
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) | 1916-01-28 | 1916-07-29 | 1917-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-01-28 | 1920-07-29 | 1921-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-01-28 | 1924-07-29 | 1925-01-28 | $7700.00 | Window Closed / Lapsed |