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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Publication date
Application filedfiledCritical
Priority to JP1981005079UpriorityCriticalpatent/JPS6312074Y2/ja
Priority to US06/334,563prioritypatent/US4425977A/en
Priority to GB8201137Aprioritypatent/GB2095190B/en
Publication of JPS57118931UpublicationCriticalpatent/JPS57118931U/ja
Application grantedgrantedCritical
Publication of JPS6312074Y2publicationCriticalpatent/JPS6312074Y2/ja
