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Priority claimed from CH1250068Aexternal-prioritypatent/CH480177A/de
Application filed by Buser Ag Maschf FritzfiledCriticalBuser Ag Maschf Fritz
Publication of ATA881568ApublicationCriticalpatent/ATA881568A/de
Application grantedgrantedCritical
Publication of AT330714BpublicationCriticalpatent/AT330714B/de