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Application filed by Rudolf Prom Chem Doubek, Josef Ing Kyral, Ivan Ing Csc Usti Nad L Zlesak, Jindra Ing Palickova, Ludek Ing PetrjanosfiledCriticalRudolf Prom Chem Doubek
Priority to CS829813ApriorityCriticalpatent/CS232467B1/en
Publication of CS981382A1publicationCriticalpatent/CS981382A1/en
Publication of CS232467B1publicationCriticalpatent/CS232467B1/en