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Priority to HUTA001207priorityCriticalpatent/HU164850B/hu
Priority to CS624473Aprioritypatent/CS194676B2/cs
Priority to DD17339673Aprioritypatent/DD106501A5/xx
Priority to PL16514673Aprioritypatent/PL90244B1/pl
Publication of HU164850BpublicationCriticalpatent/HU164850B/hu