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Priority claimed from CH324286Aexternal-prioritypatent/CH671066A5/de
Priority claimed from CH352186Aexternal-prioritypatent/CH671067A5/de
Application filed by Brotschi & Co Ag GebfiledCriticalBrotschi & Co Ag Geb
Priority claimed from EP19870111449external-prioritypatent/EP0259618B1/de
Application grantedgrantedCritical
Publication of ATE76928T1publicationCriticalpatent/ATE76928T1/de