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Priority to JP1974010437UpriorityCriticalpatent/JPS5521217Y2/ja
Priority to US05/470,139prioritypatent/US4051284A/en
Priority to GB2185174Aprioritypatent/GB1466452A/en
Publication of JPS50101899UpublicationCriticalpatent/JPS50101899U/ja
Application grantedgrantedCritical
Publication of JPS5521217Y2publicationCriticalpatent/JPS5521217Y2/ja