US2156262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating metal articles to alloy constituent metals
Assignee: Individual
•
Filing: 1932-12-27
•
Granted: 1939-05-02
•
Expires: 1952-12-27
Abstract
No abstract record available.
Inventors
- 👤 Colin G Fink
- 👤 Deren Pincus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:01
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28; C25; C25D; C25D5/00; C25D5/48; C25D5/50; Y; Y10; Y10S; Y10S29/00; Y10S29/012
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) | 1942-05-01 | 1942-10-31 | 1943-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-01 | 1946-10-31 | 1947-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-01 | 1950-10-31 | 1951-05-02 | $7700.00 | Window Closed / Lapsed |