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Application filed by Ladislav Sindelar, Jan Jankasek, Karel KrausfiledCriticalLadislav Sindelar
Priority to CS843689ApriorityCriticalpatent/CS241927B1/en
Publication of CS368984A1publicationCriticalpatent/CS368984A1/en
Publication of CS241927B1publicationCriticalpatent/CS241927B1/en