Legal status (The legal status 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 status listed.)
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 US301245Aexternal-prioritypatent/US3889031A/en
Application filedfiledCritical
Publication of JPS4970780ApublicationCriticalpatent/JPS4970780A/ja
Publication of JPS5340154B2publicationCriticalpatent/JPS5340154B2/ja