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Application filed by Kaspar Frantisek, Bohuslav PeremskyfiledCriticalKaspar Frantisek
Priority to CS849039ApriorityCriticalpatent/CS244887B1/en
Publication of CS903984A1publicationCriticalpatent/CS903984A1/en
Publication of CS244887B1publicationCriticalpatent/CS244887B1/en