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.)
Priority date (The priority date 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 date listed.)
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Priority to JP19278086UpriorityCriticalpatent/JPS6398542U/ja
Priority to US07/131,893prioritypatent/US4806982A/en
Priority to GB8729185Aprioritypatent/GB2201252B/en
Publication of JPS6398542UpublicationCriticalpatent/JPS6398542U/ja
Priority to GB8910185Aprioritypatent/GB2217033B/en
