DE742905C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Single or multi-phase transformer for electric arc welding
Assignee: Individual
•
Filing: 1938-07-16
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Granted: 1943-12-15
•
Expires: 1958-07-16
Abstract
No abstract record available.
Inventors
- 👤 Eduard Fries
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-26 17:10
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/10; B23K9/1006; H; H01; H01F; H01F29/00; H01F29/08; H01F29/10; H01F38/00; H01F38/08; H01F38/085
Claims Analysis
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References Cited (Backward Citations)
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