FR39425E
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Cooling improvements for glass-cased mercury vapor rectifiers
Assignee: Individual
•
Filing: 1930-11-26
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Granted: 1931-10-19
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Expires: 1950-11-26
Abstract
No abstract record available.
Inventors
- 👤 Marcel Demontvignier
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-01 22:34
CPC Classifications
H; H01; H01J; H01J13/00; H01J13/02; H01J13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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