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Application filedfiledCritical
Priority to JP1984135616UpriorityCriticalpatent/JPH0227750Y2/ja
Priority to US06/770,235prioritypatent/US4664426A/en
Priority to CA000489746Aprioritypatent/CA1262158A/en
Publication of JPS6150883UpublicationCriticalpatent/JPS6150883U/ja
Application grantedgrantedCritical
Publication of JPH0227750Y2publicationCriticalpatent/JPH0227750Y2/ja
