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Priority to JP3539781UpriorityCriticalpatent/JPS636741Y2/ja
Priority to DE19823206986prioritypatent/DE3206986A1/de
Priority to DE19823249793prioritypatent/DE3249793C2/de
Priority to US06/353,031prioritypatent/US4400074A/en
Publication of JPS57150832UpublicationCriticalpatent/JPS57150832U/ja
Application grantedgrantedCritical
Publication of JPS636741Y2publicationCriticalpatent/JPS636741Y2/ja