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 JP11515472ApriorityCriticalpatent/JPS5521326B2/ja
Priority to DE19732356964prioritypatent/DE2356964C3/de
Publication of JPS4974537ApublicationCriticalpatent/JPS4974537A/ja
Priority to US05/719,894prioritypatent/USRE29927E/en
Publication of JPS5521326B2publicationCriticalpatent/JPS5521326B2/ja