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Priority to JP6873780UpriorityCriticalpatent/JPS6123604Y2/ja
Priority to DE19813119294prioritypatent/DE3119294A1/de
Priority to US06/264,444prioritypatent/US4377203A/en
Publication of JPS56171621UpublicationCriticalpatent/JPS56171621U/ja
Application grantedgrantedCritical
Publication of JPS6123604Y2publicationCriticalpatent/JPS6123604Y2/ja