US1020353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating and subsequently separating sulfid ores, &c.
Assignee: Individual
•
Filing: 1909-02-16
•
Granted: 1912-03-12
•
Expires: 1929-02-16
Abstract
No abstract record available.
Inventors
- 👤 Edward James Horwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:23
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/14; B03D1/16; 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) | 1915-03-12 | 1915-09-11 | 1916-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1919-03-12 | 1919-09-11 | 1920-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1923-03-12 | 1923-09-11 | 1924-03-12 | $7700.00 | Window Closed / Lapsed |