FR687804A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Medium frequency transformer
Assignee: Jean Kieffer
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Filing: 1930-01-07
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Granted: 1930-08-13
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Expires: 1950-01-07
Abstract
No abstract record available.
Inventors
- 👤 Jean Kieffer
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-27 06:36
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/2871
Claims Analysis
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References Cited (Backward Citations)
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