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 JP1980114120UpriorityCriticalpatent/JPS6222369Y2/ja
Priority to US06/272,078prioritypatent/US4380018A/en
Priority to DE3123796Aprioritypatent/DE3123796C2/de
Publication of JPS5739239UpublicationCriticalpatent/JPS5739239U/ja
Application grantedgrantedCritical
Publication of JPS6222369Y2publicationCriticalpatent/JPS6222369Y2/ja