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 PH19223Aexternal-prioritypatent/PH14465A/en
Application filed by Standard Oil CofiledCriticalStandard Oil Co
Priority to PH20761ApriorityCriticalpatent/PH13835A/en
Publication of PH13835ApublicationCriticalpatent/PH13835A/en