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Priority to JP1986058320UpriorityCriticalpatent/JPH058226Y2/ja
Publication of JPS62170382UpublicationCriticalpatent/JPS62170382U/ja
Priority to US07/449,241prioritypatent/US5157987A/en
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Publication of JPH058226Y2publicationCriticalpatent/JPH058226Y2/ja