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Publication date
Application filed by Jozef Ing Nosal, Jan Ing Slancik, Jan Ing BurkafiledCriticalJozef Ing Nosal
Priority to CS85831ApriorityCriticalpatent/CS242330B1/en
Publication of CS83185A1publicationCriticalpatent/CS83185A1/en
Publication of CS242330B1publicationCriticalpatent/CS242330B1/en