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Application filedfiledCritical
Priority to JP6383176UpriorityCriticalpatent/JPS5431995Y2/ja
Priority to US05/793,374prioritypatent/US4109405A/en
Priority to CA277,855Aprioritypatent/CA1064878A/en
Publication of JPS52154497UpublicationCriticalpatent/JPS52154497U/ja
Priority to GB7909459Aprioritypatent/GB2044061B/en
Application grantedgrantedCritical
Publication of JPS5431995Y2publicationCriticalpatent/JPS5431995Y2/ja