DE867969C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Sound devices with directional effect
Assignee: Klangfilm GmbH
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Filing: 1941-07-03
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Granted: 1953-02-23
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Expires: 1961-07-03
Abstract
No abstract record available.
Inventors
- 👤 Martin Dr-Ing Ulner
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-24 17:46
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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