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.)
Filing date
Publication date
Application filedfiledCritical
Priority to JP5206690UpriorityCriticalpatent/JPH0411578U/ja
Priority to US07/639,422prioritypatent/US5269977A/en
Priority to EP19910105167prioritypatent/EP0457009A3/en
Publication of JPH0411578UpublicationCriticalpatent/JPH0411578U/ja