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Priority to JP1988090842UpriorityCriticalpatent/JPH0750655Y2/ja
Priority to US07/357,943prioritypatent/US5016359A/en
Priority to DE3917717Aprioritypatent/DE3917717A1/de
Priority to CN 89103801prioritypatent/CN1014274B/zh
Publication of JPH0212612UpublicationCriticalpatent/JPH0212612U/ja
Application grantedgrantedCritical
Publication of JPH0750655Y2publicationCriticalpatent/JPH0750655Y2/ja