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Application filed by Josef Prochazka, Sona Ing FrtusovafiledCriticalJosef Prochazka
Priority to CS83977ApriorityCriticalpatent/CS252106B1/cs
Publication of CS97783A1publicationCriticalpatent/CS97783A1/cs
Publication of CS252106B1publicationCriticalpatent/CS252106B1/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.