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Priority to JP2794973ApriorityCriticalpatent/JPS53778B2/ja
Priority to US05/450,227prioritypatent/US4039520A/en
Priority to GB1079474Aprioritypatent/GB1470178A/en
Priority to DE2411820Aprioritypatent/DE2411820C2/de
Publication of JPS49116154ApublicationCriticalpatent/JPS49116154A/ja
Publication of JPS53778B2publicationCriticalpatent/JPS53778B2/ja