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Priority to JP5416678UpriorityCriticalpatent/JPS6315868Y2/ja
Priority to DE19792916243prioritypatent/DE2916243A1/de
Priority to US06/032,345prioritypatent/US4297024A/en
Priority to GB7913985Aprioritypatent/GB2020047B/en
Publication of JPS54156973UpublicationCriticalpatent/JPS54156973U/ja
Application grantedgrantedCritical
Publication of JPS6315868Y2publicationCriticalpatent/JPS6315868Y2/ja