US2111661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of metallic magnesium
Assignee: American Lurgi Corp
•
Filing: 1937-03-05
•
Granted: 1938-03-22
•
Expires: 1957-03-05
Abstract
No abstract record available.
Inventors
- 👤 Ebner Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:31
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/20; C22B26/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1941-03-21 | 1941-09-20 | 1942-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-03-21 | 1945-09-20 | 1946-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-03-21 | 1949-09-20 | 1950-03-22 | $7700.00 | Window Closed / Lapsed |