Patent US1102874A successfully refreshed from Google Patents.
US1102874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ore concentration.
Assignee: Minerals Separation Ltd
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Filing: 1913-05-08
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Granted: 1914-07-07
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Expires: 1933-05-08
Abstract
No abstract record available.
Inventors
- 👤 George A Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:36
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/012; Y; Y10; Y10S; Y10S209/00; Y10S209/901
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) | 1917-07-06 | 1918-01-05 | 1918-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-07-06 | 1922-01-05 | 1922-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-07-06 | 1926-01-05 | 1926-07-07 | $7700.00 | Window Closed / Lapsed |