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 JP14181787UpriorityCriticalpatent/JPS6446792U/ja
Priority to US07/243,594prioritypatent/US4839874A/en
Priority to EP88308592Aprioritypatent/EP0308243A3/en
Publication of JPS6446792UpublicationCriticalpatent/JPS6446792U/ja
Priority to US07/342,121prioritypatent/US4985877A/en
