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Application filed by Parkan Petr, Patak ZdenekfiledCriticalParkan Petr
Priority to CS837964ApriorityCriticalpatent/CS233794B1/cs
Publication of CS796483A1publicationCriticalpatent/CS796483A1/cs
Publication of CS233794B1publicationCriticalpatent/CS233794B1/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.