FR687771A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
High frequency reception method particularly applicable to high frequency telephony
Assignee: Telefunken AG
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Filing: 1930-01-07
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Granted: 1930-08-13
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Expires: 1950-01-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
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Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-01 09:02
CPC Classifications
H; H03; H03D; H03D7/00; H03D7/18
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