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Application filedfiledCritical
Priority to JP9511281UpriorityCriticalpatent/JPS582357U/ja
Priority to CA000406008Aprioritypatent/CA1186780A/en
Priority to US06/392,697prioritypatent/US4404932A/en
Priority to GB08218778Aprioritypatent/GB2105124B/en
Publication of JPS582357UpublicationCriticalpatent/JPS582357U/ja
Application grantedgrantedCritical
Publication of JPS6221748Y2publicationCriticalpatent/JPS6221748Y2/ja