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Priority to JP10652488UpriorityCriticalpatent/JPH0642854Y2/ja
Priority to CA000603310Aprioritypatent/CA1324027C/en
Priority to EP89306266Aprioritypatent/EP0348176B1/en
Priority to DE68914889Tprioritypatent/DE68914889T2/de
Priority to US07/369,399prioritypatent/US4947185A/en
Publication of JPH0229750UpublicationCriticalpatent/JPH0229750U/ja
Application grantedgrantedCritical
Publication of JPH0642854Y2publicationCriticalpatent/JPH0642854Y2/ja