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Application filed by Jozef Ing Koscelansky, Stefan Ing MiklosfiledCriticalJozef Ing Koscelansky
Priority to CS858307ApriorityCriticalpatent/CS253129B1/en
Publication of CS830785A1publicationCriticalpatent/CS830785A1/en
Publication of CS253129B1publicationCriticalpatent/CS253129B1/en