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Priority to BE754767DpriorityCriticalpatent/BE754767A/xx
Application filedfiledCritical
Priority to JP7483570Uprioritypatent/JPS5020243Y1/ja
Priority to GB3862770Aprioritypatent/GB1314988A/en
Priority to FR7029674Aprioritypatent/FR2057969A5/fr
Priority to NL7011881Aprioritypatent/NL7011881A/xx
Priority to DE19702040132prioritypatent/DE2040132A1/de
Publication of JPS5020243Y1publicationCriticalpatent/JPS5020243Y1/ja