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 JP9932680UpriorityCriticalpatent/JPS621453Y2/ja
Priority to US06/197,148prioritypatent/US4381053A/en
Priority to CA000362728Aprioritypatent/CA1174943A/en
Publication of JPS5724327UpublicationCriticalpatent/JPS5724327U/ja
Application grantedgrantedCritical
Publication of JPS621453Y2publicationCriticalpatent/JPS621453Y2/ja