Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/612,812external-prioritypatent/US4521422A/en
Priority claimed from US06/732,986external-prioritypatent/US4626538A/en
Application filed by American Cyanamid CofiledCriticalAmerican Cyanamid Co
Publication of MX9202927ApublicationCriticalpatent/MX9202927A/es