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Application filed by Petru Frantisek, Vesela ZdenkafiledCriticalPetru Frantisek
Priority to CS833681ApriorityCriticalpatent/CS231247B1/cs
Publication of CS368183A1publicationCriticalpatent/CS368183A1/cs
Publication of CS231247B1publicationCriticalpatent/CS231247B1/cs
Procedimiento para preparar derivados del acido 7beta-(carboxialquenoilamino)-(1-o,1-5 o 1-50)-3 cefem-4- carboxilico, y los intermediarios de aplicacion exclusiva en dicho procedimiento.