DE808593C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Condenser microphone with directional effect
Assignee: Siemens and Halske AG
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Filing: 1949-03-10
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Granted: 1951-07-16
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Expires: 1969-03-10
Abstract
No abstract record available.
Inventors
- 👤 Dipl-Ing Heinrich Kalusche
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-31 11:56
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/32; H04R1/40; H04R1/406
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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