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 JP19408286UpriorityCriticalpatent/JPS6398528U/ja
Priority to GB8719201Aprioritypatent/GB2195047B/en
Publication of JPS6398528UpublicationCriticalpatent/JPS6398528U/ja
Priority to US07/331,013prioritypatent/US4941070A/en
