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Priority to JP4089174ApriorityCriticalpatent/JPS557726B2/ja
Priority to US05/566,072prioritypatent/US3983505A/en
Priority to DE19752515502prioritypatent/DE2515502C3/de
Publication of JPS50134540ApublicationCriticalpatent/JPS50134540A/ja
Publication of JPS557726B2publicationCriticalpatent/JPS557726B2/ja