DE492760C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Intermediate amplifier circuit for intercom traffic with directional amplifiers without line replicas
Assignee: Sueddeutsche Telefon Apparate Kabel und Drahtwerke AG TEKADE
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Filing: 1928-06-19
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Granted: 1930-02-26
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Expires: 1948-06-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-06 14:07
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/36
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