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 JP1990122793UpriorityCriticalpatent/JP2519581Y2/ja
Priority to US07/782,074prioritypatent/US5247409A/en
Publication of JPH0481240UpublicationCriticalpatent/JPH0481240U/ja
Application grantedgrantedCritical
Publication of JP2519581Y2publicationCriticalpatent/JP2519581Y2/ja