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Application filed by Arnost Ing Gornisiewicz, Bohumir Ing SnytafiledCriticalArnost Ing Gornisiewicz
Priority to CS862626ApriorityCriticalpatent/CS255669B1/en
Publication of CS262686A1publicationCriticalpatent/CS262686A1/en
Publication of CS255669B1publicationCriticalpatent/CS255669B1/en