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Priority to JP15081387UpriorityCriticalpatent/JPH0517047Y2/ja
Publication of JPS6456208UpublicationCriticalpatent/JPS6456208U/ja
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Heart-sound detecting apparatus, system for measuring pre-ejection period by using heart-sound detecting apparatus, and system for obtaining pulse-wave-propagation-velocity-relating information by using heart-sound detecting apparatus
