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 JP1987107315UpriorityCriticalpatent/JPS6411470U/ja
Priority to US07/212,431prioritypatent/US4977989A/en
Priority to GB8815518Aprioritypatent/GB2207964B/en
Priority to FR8808842Aprioritypatent/FR2621964A1/fr
Priority to DE3822115Aprioritypatent/DE3822115A1/de
Publication of JPS6411470UpublicationCriticalpatent/JPS6411470U/ja
