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 JP1988153020UpriorityCriticalpatent/JPH0631227Y2/ja
Priority to US07/427,389prioritypatent/US4967892A/en
Publication of JPH0272819UpublicationCriticalpatent/JPH0272819U/ja
Application grantedgrantedCritical
Publication of JPH0631227Y2publicationCriticalpatent/JPH0631227Y2/ja