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Priority to JP1975049283UpriorityCriticalpatent/JPS554162Y2/ja
Priority to US05/678,593prioritypatent/US4065143A/en
Publication of JPS51130513UpublicationCriticalpatent/JPS51130513U/ja
Application grantedgrantedCritical
Publication of JPS554162Y2publicationCriticalpatent/JPS554162Y2/ja