FR581589A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Radial horn for loudspeaker and other applications
Assignee: Compteurs Schlumberger SA
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Filing: 1924-05-13
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Granted: 1924-12-02
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Expires: 1944-05-13
Abstract
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Inventors
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Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-08 06:50
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/32; H04R1/34; H04R1/345
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