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 JP1988092743UpriorityCriticalpatent/JPH0645404Y2/ja
Priority to US07/376,031prioritypatent/US4991699A/en
Priority to EP89306936Aprioritypatent/EP0353876B1/en
Priority to DE8989306936Tprioritypatent/DE68903901T2/de
Publication of JPH0213859UpublicationCriticalpatent/JPH0213859U/ja
Application grantedgrantedCritical
Publication of JPH0645404Y2publicationCriticalpatent/JPH0645404Y2/ja