FR950588A
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FR
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Improvements to devices allowing to achieve or interrupt communication between two speakers
Assignee: Maurice Chavarot
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Filing: 1947-07-23
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Granted: 1949-09-30
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Expires: 1967-07-23
Abstract
No abstract record available.
Inventors
- 👤 Maurice Chavarot
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-22 23:33
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/14; A61J1/20; A61J1/2089; A61B; A61B5/00; A61B5/15; A61B5/150007; A61B5/150015; A61B5/15003; A61B5/150206; A61B5/150259; A61B5/150374; A61B5/150381; A61B5/150389; A61B5/150473; A61B5/150534; A61B5/150541; A61B5/150572; A61B5/150694; A61B5/150717; A61B5/150732; A61B5/153; A61B5/154; A61M; A61M5/00; A61M5/178; A61M5/20; A61M5/2053; A61M5/28; A61M5/285; A61J1/2003; A61J1/2006; A61J1/201; A61J1/2013
Claims Analysis
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References Cited (Backward Citations)
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