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Priority to JP11476472UpriorityCriticalpatent/JPS5319298Y2/ja
Priority to GB4191773Aprioritypatent/GB1403503A/en
Priority to US00394988Aprioritypatent/US3850151A/en
Publication of JPS4970321UpublicationCriticalpatent/JPS4970321U/ja
Application grantedgrantedCritical
Publication of JPS5319298Y2publicationCriticalpatent/JPS5319298Y2/ja