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Priority to JP1975069676UpriorityCriticalpatent/JPS556994Y2/ja
Priority to US05/689,515prioritypatent/US4043618A/en
Priority to GB21388/76Aprioritypatent/GB1507107A/en
Priority to CH668076Aprioritypatent/CH596465A5/xx
Publication of JPS51150331UpublicationCriticalpatent/JPS51150331U/ja
Application grantedgrantedCritical
Publication of JPS556994Y2publicationCriticalpatent/JPS556994Y2/ja