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Priority to JP6331771UpriorityCriticalpatent/JPS4819859U/ja
Priority to GB3243972Aprioritypatent/GB1374681A/en
Priority to FR7225458Aprioritypatent/FR2146762A5/fr
Priority to DE19727226310prioritypatent/DE7226310U/de
Priority to DE19722234771prioritypatent/DE2234771A1/de
Publication of JPS4819859UpublicationCriticalpatent/JPS4819859U/ja