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 JP1988072638UpriorityCriticalpatent/JPH0750654Y2/ja
Priority to US07/357,943prioritypatent/US5016359A/en
Priority to CN 89103801prioritypatent/CN1014274B/zh
Priority to IT8948019Aprioritypatent/IT1231446B/it
Priority to DE3917717Aprioritypatent/DE3917717A1/de
Publication of JPH01180611UpublicationCriticalpatent/JPH01180611U/ja
Application grantedgrantedCritical
Publication of JPH0750654Y2publicationCriticalpatent/JPH0750654Y2/ja