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 JP1989073218UpriorityCriticalpatent/JPH068092Y2/ja
Priority to CA 2019384prioritypatent/CA2019384C/en
Publication of JPH0312801UpublicationCriticalpatent/JPH0312801U/ja
Priority to US07/833,586prioritypatent/US5205695A/en
Application grantedgrantedCritical
Publication of JPH068092Y2publicationCriticalpatent/JPH068092Y2/ja