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Priority to JP7535969UpriorityCriticalpatent/JPS4816970Y1/ja
Priority to US41352Aprioritypatent/US3702907A/en
Priority to DE19702065916prioritypatent/DE2065916C3/de
Priority to DE2026414Aprioritypatent/DE2026414C3/de
Priority to GB2595470Aprioritypatent/GB1312345A/en
Priority to FR7019996Aprioritypatent/FR2044833A1/fr
Publication of JPS4816970Y1publicationCriticalpatent/JPS4816970Y1/ja