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Priority to JP2265774ApriorityCriticalpatent/JPS5612882B2/ja
Priority to US05/548,926prioritypatent/US3987432A/en
Priority to DE2508134Aprioritypatent/DE2508134C3/de
Publication of JPS50117391ApublicationCriticalpatent/JPS50117391A/ja
Publication of JPS5612882B2publicationCriticalpatent/JPS5612882B2/ja