FR929692A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
protective resonance screen for loudspeaker systems
Assignee: Andre-Marie-Bernard Charlin
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Filing: 1946-06-24
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Granted: 1948-01-05
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Expires: 1966-06-24
Abstract
No abstract record available.
Inventors
- 👤 Andre-Marie-Bernard Charlin
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-27 19:11
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/02; H04R1/021
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References Cited (Backward Citations)
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