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Priority to JP8640486UpriorityCriticalpatent/JPH0322207Y2/ja
Priority to US07/055,715prioritypatent/US4877967A/en
Priority to DE19873718616prioritypatent/DE3718616A1/de
Publication of JPS6313965UpublicationCriticalpatent/JPS6313965U/ja
Application grantedgrantedCritical
Publication of JPH0322207Y2publicationCriticalpatent/JPH0322207Y2/ja