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Priority to JP6525373UpriorityCriticalpatent/JPS5217703Y2/ja
Priority to US05/472,519prioritypatent/US3977758A/en
Priority to DE19742426208prioritypatent/DE2426208C3/de
Priority to GB2429074Aprioritypatent/GB1474196A/en
Publication of JPS5013916UpublicationCriticalpatent/JPS5013916U/ja
Application grantedgrantedCritical
Publication of JPS5217703Y2publicationCriticalpatent/JPS5217703Y2/ja