FR525948A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to acoustic devices for underwater acoustic signals
Assignee: Signal GmbH
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Filing: 1920-07-10
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Granted: 1921-09-29
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Expires: 1940-07-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-23 19:37
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
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