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Application filed by Pospisil Petr, Jaroslav Hradil, Zdenek Ing Csc StranskyfiledCriticalPospisil Petr
Priority to CS852143ApriorityCriticalpatent/CS255562B1/en
Publication of CS214385A1publicationCriticalpatent/CS214385A1/en
Publication of CS255562B1publicationCriticalpatent/CS255562B1/en