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Application filed by Josef Ing Csc Lovecky, Ladislav Ing Pekarek, Bohuslav Ing Velicka, Frantisek Rndr Skvara, Karel Tyrlik, Karel Ing KolarfiledCriticalJosef Ing Csc Lovecky
Priority to CS824570ApriorityCriticalpatent/CS238719B1/en
Publication of CS457082A1publicationCriticalpatent/CS457082A1/en
Publication of CS238719B1publicationCriticalpatent/CS238719B1/en