US1810801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing gases from molten light-metals such as aluminum and its alloys
Assignee: Individual
•
Filing: 1929-07-29
•
Granted: 1931-06-16
•
Expires: 1949-07-29
Abstract
No abstract record available.
Inventors
- 👤 Todt Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:15
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/06; C22B21/064; C03; C03B; C03B18/00; C03B18/02; C03B18/20; C22B21/0084; C22B21/0092; 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) | 1934-06-15 | 1934-12-15 | 1935-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-06-15 | 1938-12-15 | 1939-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-06-15 | 1942-12-15 | 1943-06-16 | $7700.00 | Window Closed / Lapsed |