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DE836498C
Expired / Lapsed
DE
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Remote switching of room controls in electro-acoustic call and alarm systems
Assignee: Alcatel Lucent Deutschland AG
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Filing: 1950-04-04
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Granted: 1952-04-15
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Expires: 1970-04-04
Abstract
No abstract record available.
Inventors
- 👤 Konrad Bartels
- 👤 Fritz Scherer
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-03 10:47
CPC Classifications
H; H04; H04R; H04R27/00
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Total Claims: 0
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References Cited (Backward Citations)
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