FR722993A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Arrangement for acoustic diffusers with bilateral reflection, in particular for electrostatic loudspeakers
Assignee: Hans Vogt
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Filing: 1931-09-18
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Granted: 1932-03-31
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Expires: 1951-09-18
Abstract
No abstract record available.
Inventors
- 👤 Hans Vogt
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-07 06:40
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/32; H04R1/34; H04R1/345; H04R19/00; H04R19/02
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