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Priority to JP1969059821UpriorityCriticalpatent/JPS4633596Y1/ja
Priority to US49019Aprioritypatent/US3652081A/en
Priority to GB3029370Aprioritypatent/GB1316463A/en
Priority to FR7023165Aprioritypatent/FR2047903B1/fr
Priority to DE2031256Aprioritypatent/DE2031256C3/de
Publication of JPS4633596Y1publicationCriticalpatent/JPS4633596Y1/ja