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Application filedfiledCritical
Priority to JP1975142045UpriorityCriticalpatent/JPS5552446Y2/ja
Priority to US05/729,642prioritypatent/US4065120A/en
Priority to DE19762646983prioritypatent/DE2646983A1/de
Publication of JPS5254634UpublicationCriticalpatent/JPS5254634U/ja
Application grantedgrantedCritical
Publication of JPS5552446Y2publicationCriticalpatent/JPS5552446Y2/ja