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Application filed by Josef Ing Mach, Jan Ing HubalekfiledCriticalJosef Ing Mach
Priority to CS837659ApriorityCriticalpatent/CS247208B1/en
Publication of CS765983A1publicationCriticalpatent/CS765983A1/en
Priority to BG7280385Aprioritypatent/BG47705A1/en
Publication of CS247208B1publicationCriticalpatent/CS247208B1/en