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FR993438A
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Improvements to electrodynamic loudspeakers
Assignee: Pierre-Emile Lyon
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Filing: 1949-06-21
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Granted: 1951-10-31
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Expires: 1969-06-21
Abstract
No abstract record available.
Inventors
- 👤 Pierre-Emile Lyon
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-02 07:27
CPC Classifications
H; H04; H04R; H04R9/00; H04R9/02
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