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Application filedfiledCritical
Priority to JP1339981UpriorityCriticalpatent/JPS6232268Y2/ja
Priority to DE3145472Aprioritypatent/DE3145472C2/de
Priority to US06/326,633prioritypatent/US4408856A/en
Publication of JPS57130330UpublicationCriticalpatent/JPS57130330U/ja
Application grantedgrantedCritical
Publication of JPS6232268Y2publicationCriticalpatent/JPS6232268Y2/ja