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 JP1988061051UpriorityCriticalpatent/JPH0412363Y2/ja
Priority to US07/344,722prioritypatent/US4878836A/en
Priority to EP89108263Aprioritypatent/EP0341641A3/en
Priority to CA000599332Aprioritypatent/CA1294450C/en
Publication of JPH01170860UpublicationCriticalpatent/JPH01170860U/ja
Application grantedgrantedCritical
Publication of JPH0412363Y2publicationCriticalpatent/JPH0412363Y2/ja