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Priority to JP9674969UpriorityCriticalpatent/JPS491564Y1/ja
Priority to FR7036464Aprioritypatent/FR2064292B1/fr
Priority to GB4857970Aprioritypatent/GB1313676A/en
Priority to DE19707037695prioritypatent/DE7037695U/de
Priority to DE19702050098prioritypatent/DE2050098C3/de
Publication of JPS491564Y1publicationCriticalpatent/JPS491564Y1/ja