US1564731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for separating ore particles
Assignee: WEATHERBY ORE SEPARATOR Co
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Filing: 1922-07-21
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Granted: 1925-12-08
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Expires: 1942-07-21
Abstract
No abstract record available.
Inventors
- 👤 Weatherby Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:40
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/23; B03C1/24; B03C1/253
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) | 1928-12-07 | 1929-06-08 | 1929-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-12-07 | 1933-06-08 | 1933-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-12-07 | 1937-06-08 | 1937-12-08 | $7700.00 | Window Closed / Lapsed |