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Application filed by Adolf Ing Ptacek, Kalina JaroslavfiledCriticalAdolf Ing Ptacek
Priority to CS871963ApriorityCriticalpatent/CS262393B1/en
Publication of CS196387A1publicationCriticalpatent/CS196387A1/en
Publication of CS262393B1publicationCriticalpatent/CS262393B1/en