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 JP6165481UpriorityCriticalpatent/JPS6115626Y2/ja
Priority to US06/368,431prioritypatent/US4472693A/en
Priority to DE3214598Aprioritypatent/DE3214598C2/de
Publication of JPS57176722UpublicationCriticalpatent/JPS57176722U/ja
Application grantedgrantedCritical
Publication of JPS6115626Y2publicationCriticalpatent/JPS6115626Y2/ja