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Priority to JP8298972UpriorityCriticalpatent/JPS4939801U/ja
Priority to SE7309814Aprioritypatent/SE416341B/xx
Priority to AU58016/73Aprioritypatent/AU472838B2/en
Priority to US379075Aprioritypatent/US3866694A/en
Publication of JPS4939801UpublicationCriticalpatent/JPS4939801U/ja