FR1199441A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Method and devices for restoring sound space in small or medium-sized rooms
Assignee: Joseph Cordonnier
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Filing: 1958-02-26
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Granted: 1959-12-14
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Expires: 1978-02-26
Abstract
No abstract record available.
Inventors
- 👤 Joseph Cordonnier
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-06 03:23
CPC Classifications
H; H04; H04R; H04R5/00; H04R5/02; H04R1/00; H04R1/20; H04R1/32; H04R1/323
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References Cited (Backward Citations)
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