Patent US2820909A successfully refreshed from Google Patents.
AT42464B
Expired / Lapsed
AT
⏱️ 0.0 years remaining
Device for searching for the direction of electric waves.
Assignee: Josef Dr Cernovsky
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Filing: 1907-11-19
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Granted: 1910-06-10
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Expires: 1927-11-19
Abstract
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Inventors
- 👤 Josef Dr Cernovsky
Bibliographic Details
Application Number
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Jurisdiction
AT
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google_patents
Last Synchronized
2026-10-22 23:05
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