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Application filed by Telefonapparatfabrikanterne AufiledCriticalTelefonapparatfabrikanterne Au
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Publication of DK32540CpublicationCriticalpatent/DK32540C/da
DK32540D1919-05-151920-03-06Fremgangsmaade og Apparat til Betjening af Montautomater for automatiske og halvautomatiske Telefonanlæg og lignende.
DK32540C
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