Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Priority to JP3081776UpriorityCriticalpatent/JPS5530521Y2/ja
Publication of JPS52121997UpublicationCriticalpatent/JPS52121997U/ja
Application grantedgrantedCritical
Publication of JPS5530521Y2publicationCriticalpatent/JPS5530521Y2/ja
