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Priority to JP1987109115UpriorityCriticalpatent/JPH0453291Y2/ja
Priority to US07/216,653prioritypatent/US4982995A/en
Priority to GB8816680Aprioritypatent/GB2207699B/en
Publication of JPS6414517UpublicationCriticalpatent/JPS6414517U/ja
Application grantedgrantedCritical
Publication of JPH0453291Y2publicationCriticalpatent/JPH0453291Y2/ja
