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Application filedfiledCritical
Priority to JP1976044915UpriorityCriticalpatent/JPS5312885Y2/ja
Priority to US05/772,132prioritypatent/US4087099A/en
Priority to DE2708670Aprioritypatent/DE2708670C3/de
Publication of JPS52135709UpublicationCriticalpatent/JPS52135709U/ja
Application grantedgrantedCritical
Publication of JPS5312885Y2publicationCriticalpatent/JPS5312885Y2/ja