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Application filed by Vacha Jaroslav, Josef Ing Kyral, Zlesak IvanfiledCriticalVacha Jaroslav
Priority to CS866092ApriorityCriticalpatent/CS261478B1/cs
Publication of CS609286A1publicationCriticalpatent/CS609286A1/cs
Publication of CS261478B1publicationCriticalpatent/CS261478B1/cs