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FR1136866A
Expired / Lapsed
FR
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Microphone development
Assignee: Melodium S A
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Filing: 1955-10-01
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Granted: 1957-05-21
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Expires: 1975-10-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-24 11:56
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/222
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Total Claims: 0
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References Cited (Backward Citations)
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