Patent FR884487A successfully refreshed from Google Patents.
FR884487A
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Directed sound recording device
Assignee: Telefunken AG
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Filing: 1942-07-27
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Granted: 1943-08-18
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Expires: 1962-07-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-01 11:53
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/28
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