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 US450752Aexternal-prioritypatent/US3914378A/en
Application filedfiledCritical
Publication of JPS50123081ApublicationCriticalpatent/JPS50123081A/ja