Patent US1031257A successfully refreshed from Google Patents.
US1031257A
Expired / Lapsed
US
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Process and apparatus for extracting and refining metals and alloys.
Assignee: Individual
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Filing: 1909-10-25
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Granted: 1912-07-02
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Expires: 1929-10-25
Abstract
No abstract record available.
Inventors
- 👤 Albert E Greene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:15
CPC Classifications
C; C22; C22B; C22B15/00; C22B15/0026; C22B15/0028; C22B15/003; C22B15/0039; C21; C21C; C21C5/00; C21C5/52; C21C5/5211; C21C5/5217
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) | 1915-07-02 | 1916-01-01 | 1916-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1919-07-02 | 1920-01-01 | 1920-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1923-07-02 | 1924-01-01 | 1924-07-02 | $7700.00 | Window Closed / Lapsed |