FR893068A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Speech current transmission installation with remote adjustment of sound intensity
Assignee: Klangfilm GmbH
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Filing: 1943-04-02
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Granted: 1944-05-30
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Expires: 1963-04-02
Abstract
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Inventors
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Bibliographic Details
Application Number
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Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-25 12:00
CPC Classifications
H; H03; H03G; H03G1/00; H03G1/02
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