Patent DE685673C successfully refreshed from Google Patents.
DE685673C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Multi-part, adjustable tone screen for receiver and amplifier
Assignee: Telefunken AG
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Filing: 1936-04-07
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Granted: 1939-12-22
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Expires: 1956-04-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-06 12:11
CPC Classifications
H; H03; H03G; H03G5/00; H03G5/02; H03G5/04; H03G5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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