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 JP10231887UpriorityCriticalpatent/JPS647902U/ja
Priority to US07/213,291prioritypatent/US4860788A/en
Publication of JPS647902UpublicationCriticalpatent/JPS647902U/ja
Priority to US07/399,703prioritypatent/US5097746A/en
