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 JP13510472UpriorityCriticalpatent/JPS521991Y2/ja
Publication of JPS4989592UpublicationCriticalpatent/JPS4989592U/ja
Application grantedgrantedCritical
Publication of JPS521991Y2publicationCriticalpatent/JPS521991Y2/ja
