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Priority to JP1987047215UpriorityCriticalpatent/JPH067679Y2/ja
Priority to GB8806950Aprioritypatent/GB2204444B/en
Priority to US07/174,836prioritypatent/US4821257A/en
Priority to KR2019880004308Uprioritypatent/KR910005478Y1/ko
Publication of JPS63153699UpublicationCriticalpatent/JPS63153699U/ja
Priority to HK822/93Aprioritypatent/HK82293A/xx
Application grantedgrantedCritical
Publication of JPH067679Y2publicationCriticalpatent/JPH067679Y2/ja