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Priority to JP1987193395UpriorityCriticalpatent/JPH0198166U/ja
Priority to US07/214,179prioritypatent/US4968918A/en
Priority to DE3887933Tprioritypatent/DE3887933T2/de
Priority to EP88110707Aprioritypatent/EP0298420B1/en
Priority to KR1019880008345Aprioritypatent/KR950001541B1/ko
Publication of JPH0198166UpublicationCriticalpatent/JPH0198166U/ja