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 JP1987171471UpriorityCriticalpatent/JP2531764Y2/ja
Priority to US07/221,288prioritypatent/US4884091A/en
Publication of JPH0175224UpublicationCriticalpatent/JPH0175224U/ja
Application grantedgrantedCritical
Publication of JP2531764Y2publicationCriticalpatent/JP2531764Y2/ja
