US1334420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of concentrating ores
Assignee: METALLURG CORP
•
Filing: 1919-01-16
•
Granted: 1920-03-23
•
Expires: 1939-01-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph T Terry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:26
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/002; B03D2201/00; B03D2201/04; B03D2203/00; B03D2203/02; Y; Y10; Y10S; Y10S209/00; Y10S209/901
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1923-03-23 | 1923-09-22 | 1924-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-03-23 | 1927-09-22 | 1928-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-03-23 | 1931-09-22 | 1932-03-23 | $7700.00 | Window Closed / Lapsed |