A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
181/20
A61B 7/02 (2006.01)
Patent
CA 1129781
IN THE UNITED STATES PATENT AND TRADEMARK OFFICE STETHOSCOPE WITH PROBE SOUND PICK-UP AND RESONANT CAVITY AMPLIFICATION ABSTRACT OF THE DISCLOSURE 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.
354447
Hill Raymond R.
Hill Raymond R.
Macrae & Co.
LandOfFree
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