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Priority to JP2262770ApriorityCriticalpatent/JPS4929960B1/ja
Priority to GB254471Aprioritypatent/GB1304163A/en
Priority to BE772625Aprioritypatent/BE772625A/xx
Priority to US00296538Aprioritypatent/US3854890A/en
Publication of JPS4929960B1publicationCriticalpatent/JPS4929960B1/ja