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 JP4131673ApriorityCriticalpatent/JPS5139910B2/ja
Priority to CA197,386Aprioritypatent/CA1043488A/en
Priority to US05/461,046prioritypatent/US3981943A/en
Priority to GB1654774Aprioritypatent/GB1442692A/en
Publication of JPS49128953ApublicationCriticalpatent/JPS49128953A/ja
Publication of JPS5139910B2publicationCriticalpatent/JPS5139910B2/ja