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Application filed by Domenico MastinifiledCriticalDomenico Mastini
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Publication of DK55166CpublicationCriticalpatent/DK55166C/da
DK55166D1935-04-111935-04-11Telefonsystem med dels traadløs, dels over et Ledningsnet tilvejebragt Taleforbindelse ag Apparat til Anvendelse i samme.
DK55166C
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