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Priority claimed from JP7108871Aexternal-prioritypatent/JPS5233108B2/ja
Priority claimed from JP7108771Aexternal-prioritypatent/JPS5233107B2/ja
Priority claimed from JP540172Aexternal-prioritypatent/JPS5233623B2/ja
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Publication of HU165621BpublicationCriticalpatent/HU165621B/hu