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Priority to JP1975037198UpriorityCriticalpatent/JPS5533493Y2/ja
Priority to US05/567,156prioritypatent/US3987486A/en
Priority to DE2516415Aprioritypatent/DE2516415B2/de
Priority to DE19752559873prioritypatent/DE2559873C2/de
Publication of JPS51121305UpublicationCriticalpatent/JPS51121305U/ja
Application grantedgrantedCritical
Publication of JPS5533493Y2publicationCriticalpatent/JPS5533493Y2/ja