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Priority to JP18792780UpriorityCriticalpatent/JPS6226824Y2/ja
Priority to DE19813151826prioritypatent/DE3151826A1/de
Priority to US06/335,317prioritypatent/US4416432A/en
Publication of JPS57114550UpublicationCriticalpatent/JPS57114550U/ja
Application grantedgrantedCritical
Publication of JPS6226824Y2publicationCriticalpatent/JPS6226824Y2/ja