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Priority to JP1980057030UpriorityCriticalpatent/JPS6215816Y2/ja
Priority to US06/184,668prioritypatent/US4377229A/en
Priority to DE19803036171prioritypatent/DE3036171A1/de
Publication of JPS56159341UpublicationCriticalpatent/JPS56159341U/ja
Application grantedgrantedCritical
Publication of JPS6215816Y2publicationCriticalpatent/JPS6215816Y2/ja