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Priority to JP1987081651UpriorityCriticalpatent/JPH0419330Y2/ja
Priority to DE3802233Aprioritypatent/DE3802233A1/de
Publication of JPS63190753UpublicationCriticalpatent/JPS63190753U/ja
Priority to US07/382,087prioritypatent/US4914274A/en
Application grantedgrantedCritical
Publication of JPH0419330Y2publicationCriticalpatent/JPH0419330Y2/ja