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Priority to JP1975171632UpriorityCriticalpatent/JPS5757366Y2/ja
Priority to GB51952/76Aprioritypatent/GB1538798A/en
Priority to US05/751,161prioritypatent/US4145132A/en
Priority to DE19762657552prioritypatent/DE2657552A1/de
Publication of JPS52107141UpublicationCriticalpatent/JPS52107141U/ja
Application grantedgrantedCritical
Publication of JPS5757366Y2publicationCriticalpatent/JPS5757366Y2/ja