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 JP13566387UpriorityCriticalpatent/JPS6440854U/ja
Priority to US07/237,870prioritypatent/US4980728A/en
Publication of JPS6440854UpublicationCriticalpatent/JPS6440854U/ja