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Priority to JP49043434ApriorityCriticalpatent/JPS5248008B2/ja
Priority to US05/568,292prioritypatent/US4000515A/en
Priority to DE2517564Aprioritypatent/DE2517564C3/de
Publication of JPS50137527ApublicationCriticalpatent/JPS50137527A/ja
Publication of JPS5248008B2publicationCriticalpatent/JPS5248008B2/ja