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Priority to JP6905290UpriorityCriticalpatent/JPH0540296Y2/ja
Priority to CA 2044950prioritypatent/CA2044950C/en
Priority to ITRM910444Aprioritypatent/IT1248343B/it
Publication of JPH0427158UpublicationCriticalpatent/JPH0427158U/ja
Priority to US07/893,608prioritypatent/US5192184A/en
Application grantedgrantedCritical
Publication of JPH0540296Y2publicationCriticalpatent/JPH0540296Y2/ja