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Priority to JP6995070UpriorityCriticalpatent/JPS4736192Y1/ja
Priority to US00154531Aprioritypatent/US3773155A/en
Priority to DE19712131226prioritypatent/DE2131226C3/de
Priority to GB2873971Aprioritypatent/GB1347576A/en
Publication of JPS4736192Y1publicationCriticalpatent/JPS4736192Y1/ja