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 JP1987166694UpriorityCriticalpatent/JPH0754057Y2/ja
Priority to US07/263,632prioritypatent/US4899842A/en
Publication of JPH0170683UpublicationCriticalpatent/JPH0170683U/ja
Application grantedgrantedCritical
Publication of JPH0754057Y2publicationCriticalpatent/JPH0754057Y2/ja