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 JP50092553ApriorityCriticalpatent/JPS5217605A/ja
Priority to US05/614,318prioritypatent/US4107587A/en
Publication of JPS5217605ApublicationCriticalpatent/JPS5217605A/ja
Priority to US06/171,799prioritypatent/USRE30761E/en
Publication of JPS5743027B2publicationCriticalpatent/JPS5743027B2/ja