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Application filed by Zdenek Ing Hynek, Riha MilanfiledCriticalZdenek Ing Hynek
Priority to CS882962ApriorityCriticalpatent/CS269188B1/en
Publication of CS296288A1publicationCriticalpatent/CS296288A1/en
Publication of CS269188B1publicationCriticalpatent/CS269188B1/en