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Priority to JP6850179UpriorityCriticalpatent/JPS6137035Y2/ja
Priority to US06/150,074prioritypatent/US4357852A/en
Publication of JPS55169587UpublicationCriticalpatent/JPS55169587U/ja
Application grantedgrantedCritical
Publication of JPS6137035Y2publicationCriticalpatent/JPS6137035Y2/ja