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 JP1989131887UpriorityCriticalpatent/JPH0734419Y2/ja
Publication of JPH0371335UpublicationCriticalpatent/JPH0371335U/ja
Priority to US07/912,712prioritypatent/US5257055A/en
Application grantedgrantedCritical
Publication of JPH0734419Y2publicationCriticalpatent/JPH0734419Y2/ja