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Application filedfiledCritical
Priority to JP10412175UpriorityCriticalpatent/JPS552089Y2/ja
Priority to IT7650581Aprioritypatent/IT1073972B/it
Priority to DE2633578Aprioritypatent/DE2633578C2/de
Priority to US05/709,646prioritypatent/US4108009A/en
Priority to GB31751/76Aprioritypatent/GB1560564A/en
Publication of JPS5218503UpublicationCriticalpatent/JPS5218503U/ja
Application grantedgrantedCritical
Publication of JPS552089Y2publicationCriticalpatent/JPS552089Y2/ja