US2288613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of reducing metallic oxides
Assignee: MINERALS AND METALS Corp
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Filing: 1940-05-17
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Granted: 1942-07-07
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Expires: 1960-05-17
Abstract
No abstract record available.
Inventors
- 👤 Gilbert D Dill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:51
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/14; C21B13/146; C21B13/0006; C21B13/0026; C22; C22B; C22B5/00; C22B5/02; C22B5/10; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/134; Y10; Y10S; Y10S75/00; Y10S75/958
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) | 1945-07-06 | 1946-01-05 | 1946-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-07-06 | 1950-01-05 | 1950-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-07-06 | 1954-01-05 | 1954-07-07 | $7700.00 | Window Closed / Lapsed |