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Application filed by Bohumir Ing Sterba, Vnislav Akerman, Zdenek MatejicekfiledCriticalBohumir Ing Sterba
Priority to CS844048ApriorityCriticalpatent/CS241940B1/cs
Publication of CS404884A1publicationCriticalpatent/CS404884A1/cs
Publication of CS241940B1publicationCriticalpatent/CS241940B1/cs