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 JP18127780UpriorityCriticalpatent/JPH026778Y2/ja
Priority to US06/328,691prioritypatent/US4618107A/en
Priority to EP81305860Aprioritypatent/EP0054425B1/en
Priority to DE8181305860Tprioritypatent/DE3172849D1/de
Publication of JPS57102977UpublicationCriticalpatent/JPS57102977U/ja
Application grantedgrantedCritical
Publication of JPH026778Y2publicationCriticalpatent/JPH026778Y2/ja