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Application filed by Sebor Vaclav, Frantisek BeranekfiledCriticalSebor Vaclav
Priority to CS88829ApriorityCriticalpatent/CS268242B1/en
Publication of CS82988A1publicationCriticalpatent/CS82988A1/en
Publication of CS268242B1publicationCriticalpatent/CS268242B1/en