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Application filed by Stoebestaalfabrikanterne FriedfiledCriticalStoebestaalfabrikanterne Fried
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Publication of DK28281CpublicationCriticalpatent/DK28281C/en
DK28281D1916-09-301920-05-25
Device that remotely displays the position of hands or the like with a synchronously operating sender and receiver system.
DK28281C
(en)