DE883299C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Loudspeaker arrangement with directional effect
Assignee: Siemens Corp
•
Filing: 1949-12-18
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Granted: 1953-07-16
•
Expires: 1969-12-18
Abstract
No abstract record available.
Inventors
- 👤 Heinrich Dipl-Ing Kalusche
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-28 11:15
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/32; H04R1/34; H04R1/345; H04R1/347
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB484704A
Cited
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