US1260668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of metallic sulfid ores.
Assignee: Minerals Separation North American Corp
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Filing: 1914-08-26
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Granted: 1918-03-26
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Expires: 1934-08-26
Abstract
No abstract record available.
Inventors
- 👤 James Hebbard
- 👤 Rasmus John Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:11
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/02; B03D1/06; 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) | 1921-03-25 | 1921-09-24 | 1922-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-03-25 | 1925-09-24 | 1926-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-03-25 | 1929-09-24 | 1930-03-26 | $7700.00 | Window Closed / Lapsed |