FR1225845A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to sound devices made up of a loudspeaker and a vented acoustic enclosure
Assignee: Joseph-Henri Leon
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Filing: 1959-02-20
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Granted: 1960-07-04
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Expires: 1979-02-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph-Henri Leon
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-06 10:03
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/28; H04R1/2807; H04R1/2815; H04R1/2819
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