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Priority to JP9106468UpriorityCriticalpatent/JPS4828265Y1/ja
Priority to US866212Aprioritypatent/US3611400A/en
Priority to GB1297153Dprioritypatent/GB1297153A/en
Priority to DE19691952212prioritypatent/DE1952212A1/de
Publication of JPS4828265Y1publicationCriticalpatent/JPS4828265Y1/ja