发明名称 Stethoscope with probe sound pick-up and resonant cavity amplification
摘要 A stethoscope having one or more resonant cavities adjusted to amplify sound frequencies of interest, such as those of the heart or lungs of a patient, and including a pick-up head that contacts the patient through a probe.
申请公布号 US4270627(A) 申请公布日期 1981.06.02
申请号 US19790053924 申请日期 1979.07.02
申请人 HILL, RAYMOND R. 发明人 HILL, RAYMOND R.
分类号 A61B7/02;(IPC1-7):A61B7/02;H04R25/00 主分类号 A61B7/02
代理机构 代理人
主权项
地址