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Priority claimed from DE19853504739external-prioritypatent/DE3504739C2/de
Application filed by Gebrueder Frei Gmbh & Co KgfiledCriticalGebrueder Frei Gmbh & Co Kg
Publication of IT8619266A0publicationCriticalpatent/IT8619266A0/it
Publication of IT8619266A1publicationCriticalpatent/IT8619266A1/it
Application grantedgrantedCritical
Publication of IT1189473BpublicationCriticalpatent/IT1189473B/it