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Priority to JP507969ApriorityCriticalpatent/JPS4915368B1/ja
Priority to US4322Aprioritypatent/US3632988A/en
Priority to GB262570Aprioritypatent/GB1303443A/en
Priority to NL7000902Aprioritypatent/NL7000902A/xx
Publication of JPS4915368B1publicationCriticalpatent/JPS4915368B1/ja