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Priority claimed from DE19671665397external-prioritypatent/DE1665397A1/de
Priority claimed from DE19681765152external-prioritypatent/DE1765152A1/de
Application filed by Preh Elektro FeinmechanikfiledCriticalPreh Elektro Feinmechanik
Application grantedgrantedCritical
Publication of AT285740BpublicationCriticalpatent/AT285740B/de