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Application filed by Frantisek Ing Mares, Jan SplichalfiledCriticalFrantisek Ing Mares
Priority to CS846349ApriorityCriticalpatent/CS243689B1/en
Publication of CS634984A1publicationCriticalpatent/CS634984A1/en
Publication of CS243689B1publicationCriticalpatent/CS243689B1/en