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Application filed by Jozef Ing Koscelansky, Viktor BenkofiledCriticalJozef Ing Koscelansky
Priority to CS846334ApriorityCriticalpatent/CS243164B1/en
Publication of CS633484A1publicationCriticalpatent/CS633484A1/en
Publication of CS243164B1publicationCriticalpatent/CS243164B1/en