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
Application filedfiledCritical
Priority to JP4538777UpriorityCriticalpatent/JPS53142214U/ja
Priority to US05/891,113prioritypatent/US4173793A/en
Priority to CA299,880Aprioritypatent/CA1108354A/en
Publication of JPS53142214UpublicationCriticalpatent/JPS53142214U/ja
