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 JP1981084703UpriorityCriticalpatent/JPS6222021Y2/ja
Priority to US06/386,613prioritypatent/US4453061A/en
Publication of JPS57197149UpublicationCriticalpatent/JPS57197149U/ja
Application grantedgrantedCritical
Publication of JPS6222021Y2publicationCriticalpatent/JPS6222021Y2/ja
