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Application filed by Svatoslav Mahelka, Vaclav TomasekfiledCriticalSvatoslav Mahelka
Priority to CS849431ApriorityCriticalpatent/CS242082B1/en
Publication of CS943184A1publicationCriticalpatent/CS943184A1/en
Publication of CS242082B1publicationCriticalpatent/CS242082B1/en