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Priority to JP9245469UpriorityCriticalpatent/JPS4843459Y1/ja
Priority to DE19702047530prioritypatent/DE2047530C3/de
Priority to GB1295898Dprioritypatent/GB1295898A/en
Priority to US00335148Aprioritypatent/US3799312A/en
Publication of JPS4843459Y1publicationCriticalpatent/JPS4843459Y1/ja