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 JP18504486UpriorityCriticalpatent/JPS6389652U/ja
Priority to EP19930100543prioritypatent/EP0540500A3/en
Priority to EP87110021Aprioritypatent/EP0252523A3/en
Priority to US07/072,206prioritypatent/US4893945A/en
Publication of JPS6389652UpublicationCriticalpatent/JPS6389652U/ja
Priority to US07/242,384prioritypatent/US4963851A/en
