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Application filed by Pfisterer Elektrotech KarlfiledCriticalPfisterer Elektrotech Karl
Priority to DK509073ApriorityCriticalpatent/DK138440B/da
Publication of DK509073ApublicationCriticalpatent/DK509073A/da
Publication of DK138440BpublicationCriticalpatent/DK138440B/da
Application grantedgrantedCritical
Publication of DK138440CpublicationCriticalpatent/DK138440C/da