FR898796A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Loudspeaker diffusion installation for places disturbed by various noises
Assignee: Albiswerk Zuerich AG
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Filing: 1943-10-12
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Granted: 1945-05-07
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Expires: 1963-10-12
Abstract
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Inventors
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Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-03 17:55
CPC Classifications
H; H04; H04R; H04R27/00; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/32
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