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Publication date
Application filedfiledCritical
Priority to JP1987041158UpriorityCriticalpatent/JPH0448927Y2/ja
Priority to US07/169,060prioritypatent/US4974368A/en
Publication of JPS63147262UpublicationCriticalpatent/JPS63147262U/ja
Priority to US07/569,386prioritypatent/US4999954A/en
Application grantedgrantedCritical
Publication of JPH0448927Y2publicationCriticalpatent/JPH0448927Y2/ja
Priority to US08/157,440prioritypatent/US5347763A/en
