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Ford bell stethoscope
William F. Ford devloped the Ford Bell Stethoscope, patented in 1882. The key innovation in the Ford Bell Stethoscope was its bell-shaped chest piece, which aimed to enhance the acoustic properties of the stethoscope. The bell was designed to be more sensitive to low-frequency sounds, such as heartbeats and certain lung sounds. This made it especially useful for physicians when diagnosing conditions related to heart.






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