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Priority to JP5900869UpriorityCriticalpatent/JPS4837774Y1/ja
Priority to DE19691961951prioritypatent/DE1961951B1/de
Priority to GB1257537Dprioritypatent/GB1257537A/en
Priority to US883806Aprioritypatent/US3662307A/en
Priority to FR6942949Aprioritypatent/FR2025984B1/fr
Priority to NL6918635.Aprioritypatent/NL157474B/xx
Publication of JPS4837774Y1publicationCriticalpatent/JPS4837774Y1/ja