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Publication date
Application filed by Zdenek Ing Haupt, Frantisek KucerafiledCriticalZdenek Ing Haupt
Priority to CS863680ApriorityCriticalpatent/CS260494B1/en
Publication of CS368086A1publicationCriticalpatent/CS368086A1/en
Publication of CS260494B1publicationCriticalpatent/CS260494B1/en