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Application filedfiledCritical
Priority to JP17290583UpriorityCriticalpatent/JPS6081057U/ja
Priority to US06/668,859prioritypatent/US4622712A/en
Priority to CA000467110Aprioritypatent/CA1231209A/en
Priority to DE3440677Aprioritypatent/DE3440677C2/de
Publication of JPS6081057UpublicationCriticalpatent/JPS6081057U/ja
Priority to KR2019870001164Uprioritypatent/KR880003346Y1/ko
Application grantedgrantedCritical
Publication of JPS643720Y2publicationCriticalpatent/JPS643720Y2/ja