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 JP1990100858UpriorityCriticalpatent/JP2538239Y2/ja
Publication of JPH0457912UpublicationCriticalpatent/JPH0457912U/ja
Priority to US08/531,063prioritypatent/US5717684A/en
Application grantedgrantedCritical
Publication of JP2538239Y2publicationCriticalpatent/JP2538239Y2/ja