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 JP495072ApriorityCriticalpatent/JPS4874540A/ja
Priority to CA161,069Aprioritypatent/CA1021088A/en
Publication of JPS4874540ApublicationCriticalpatent/JPS4874540A/ja
Priority to US05/750,942prioritypatent/US4112160A/en