US1332585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removing impurities from molten metal
Assignee: Individual
•
Filing: 1918-11-01
•
Granted: 1920-03-02
•
Expires: 1938-11-01
Abstract
No abstract record available.
Inventors
- 👤 White William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:24
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/02; 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) | 1923-03-02 | 1923-09-01 | 1924-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-03-02 | 1927-09-01 | 1928-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-03-02 | 1931-09-01 | 1932-03-02 | $7700.00 | Window Closed / Lapsed |