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Application filed by Karol Ing Topor, Miroslav Ing PetrikfiledCriticalKarol Ing Topor
Priority to CS891839ApriorityCriticalpatent/CS270149B1/en
Publication of CS183989A1publicationCriticalpatent/CS183989A1/en
Publication of CS270149B1publicationCriticalpatent/CS270149B1/en