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 US257653Aexternal-prioritypatent/US3859897A/en
Application filedfiledCritical
Publication of JPS4955473ApublicationCriticalpatent/JPS4955473A/ja