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Priority to JP1986154717UpriorityCriticalpatent/JPH0446928Y2/ja
Publication of JPS6360634UpublicationCriticalpatent/JPS6360634U/ja
Priority to US07/405,099prioritypatent/US5002412A/en
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Publication of JPH0446928Y2publicationCriticalpatent/JPH0446928Y2/ja