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Priority to JP1970074007UpriorityCriticalpatent/JPS4719362Y1/ja
Priority to US00165463Aprioritypatent/US3812673A/en
Priority to DE19712137025prioritypatent/DE2137025C3/de
Priority to GB3463571Aprioritypatent/GB1355267A/en
Priority to FR7127111Aprioritypatent/FR2103293A5/fr
Publication of JPS4719362Y1publicationCriticalpatent/JPS4719362Y1/ja