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Priority to JP7250371UpriorityCriticalpatent/JPS4831691U/ja
Priority to GB1191172Aprioritypatent/GB1373848A/en
Priority to US00235504Aprioritypatent/US3792738A/en
Priority to DE2214933Aprioritypatent/DE2214933C3/de
Priority to FR7210721Aprioritypatent/FR2131667A5/fr
Publication of JPS4831691UpublicationCriticalpatent/JPS4831691U/ja