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Application filed by Sumitomo Electric Industries, Nippon Telegraph & TelephonefiledCriticalSumitomo Electric Industries
Priority to DK593384ApriorityCriticalpatent/DK163425C/en
Publication of DK593384D0publicationCriticalpatent/DK593384D0/en
Publication of DK593384ApublicationCriticalpatent/DK593384A/en
Publication of DK163425BpublicationCriticalpatent/DK163425B/en
Application grantedgrantedCritical
Publication of DK163425CpublicationCriticalpatent/DK163425C/en