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Application filed by Waagner Biro AgfiledCriticalWaagner Biro Ag
Priority to AT872259ApriorityCriticalpatent/AT221111B/de
Priority to GB41306/60Aprioritypatent/GB974863A/en
Application grantedgrantedCritical
Publication of AT221111BpublicationCriticalpatent/AT221111B/de