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 JP5977776ApriorityCriticalpatent/JPS52142557A/ja
Publication of JPS52142557ApublicationCriticalpatent/JPS52142557A/ja
Priority to US06/048,493prioritypatent/US4352295A/en
Publication of JPS556871B2publicationCriticalpatent/JPS556871B2/ja