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 JP1991003331UpriorityCriticalpatent/JP2588241Y2/ja
Priority to US07/784,248prioritypatent/US5197901A/en
Publication of JPH0494281UpublicationCriticalpatent/JPH0494281U/ja
Application grantedgrantedCritical
Publication of JP2588241Y2publicationCriticalpatent/JP2588241Y2/ja