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Priority to JP2623777UpriorityCriticalpatent/JPS6121683Y2/ja
Priority to US05/883,845prioritypatent/US4158175A/en
Priority to DE2809792Aprioritypatent/DE2809792C2/de
Priority to GB9062/78Aprioritypatent/GB1601625A/en
Publication of JPS53122596UpublicationCriticalpatent/JPS53122596U/ja
Application grantedgrantedCritical
Publication of JPS6121683Y2publicationCriticalpatent/JPS6121683Y2/ja