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Priority to JP10420988UpriorityCriticalpatent/JPH0523023Y2/ja
Priority to DE68915829Tprioritypatent/DE68915829T2/de
Priority to EP89104510Aprioritypatent/EP0333133B1/en
Priority to US07/323,731prioritypatent/US4926487A/en
Priority to CA000593825Aprioritypatent/CA1306420C/en
Priority to KR2019890002900Uprioritypatent/KR950000415Y1/ko
Publication of JPH0226869UpublicationCriticalpatent/JPH0226869U/ja
Application grantedgrantedCritical
Publication of JPH0523023Y2publicationCriticalpatent/JPH0523023Y2/ja