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Priority to JP44091686ApriorityCriticalpatent/JPS5020723B1/ja
Priority to US3616832Dprioritypatent/US3616832A/en
Priority to GB1295450Dprioritypatent/GB1295450A/en
Priority to DE19691964514prioritypatent/DE1964514C3/de
Priority to NL6919403Aprioritypatent/NL6919403A/xx
Priority to FR6944951Aprioritypatent/FR2027076A1/fr
Publication of JPS5020723B1publicationCriticalpatent/JPS5020723B1/ja