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Priority claimed from CH1163676Aexternal-prioritypatent/CH614642A5/xx
Application filed by Buehrer ErwinfiledCriticalBuehrer Erwin
Publication of ATA41677ApublicationCriticalpatent/ATA41677A/de
Application grantedgrantedCritical
Publication of AT355745BpublicationCriticalpatent/AT355745B/de