US1410936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovering metals from their ores
Assignee: Individual
•
Filing: 1919-06-11
•
Granted: 1922-03-28
•
Expires: 1939-06-11
Abstract
No abstract record available.
Inventors
- 👤 Edmund S Leaver
- 👤 Charles E Van Barneveld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:40
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/04; C22B3/06; C22B3/08; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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) | 1925-03-27 | 1925-09-26 | 1926-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-03-27 | 1929-09-26 | 1930-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-03-27 | 1933-09-26 | 1934-03-28 | $7700.00 | Window Closed / Lapsed |