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 JP13451675UpriorityCriticalpatent/JPS5247309U/ja
Priority to US05/697,123prioritypatent/US4111615A/en
Priority to CA255,181Aprioritypatent/CA1064209A/en
Publication of JPS5247309UpublicationCriticalpatent/JPS5247309U/ja