US2432431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cell for the electrolysis of magnesium chloride fusions
Assignee: Mathieson Alkali Works Inc
•
Filing: 1942-11-21
•
Granted: 1947-12-09
•
Expires: 1962-11-21
Abstract
No abstract record available.
Inventors
- 👤 Robert B Macmullin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:50
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US519400A
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US1343662A
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US687709A
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US1023545A
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US1588679A
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US1709759A
Cited
US2055359A
Cited
US1876830A
Cited
US2111264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-08 | 1951-06-09 | 1951-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-08 | 1955-06-09 | 1955-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-08 | 1959-06-09 | 1959-12-09 | $7700.00 | Window Closed / Lapsed |