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Priority to JP416379UpriorityCriticalpatent/JPS573519Y2/ja
Priority to US06/094,332prioritypatent/US4343061A/en
Priority to CA340,212Aprioritypatent/CA1133664A/en
Publication of JPS55104992UpublicationCriticalpatent/JPS55104992U/ja
Application grantedgrantedCritical
Publication of JPS573519Y2publicationCriticalpatent/JPS573519Y2/ja