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Application filed by Karel Bouchal, Jiri Vacik, Eva Zurkova, Frantisek Svec, Jaroslav Kalal, Oldrich Paleta, Vaclav Dedek, Zdenek Chvatal, Ivan HemerfiledCriticalKarel Bouchal
Priority to CS769681ApriorityCriticalpatent/CS222061B1/cs
Publication of CS222061B1publicationCriticalpatent/CS222061B1/cs