Patents by Inventor Thomas Drummond

Thomas Drummond has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Stethoscope with Frictional Noise Reduction
    Publication number: 20080093157
    Abstract: A stethoscope is provided, comprising: a sound receiving member (12) for receiving sounds, the sound receiving member capable of transmitting sound received thereby; a head set coupled to the sound receiving member to receive sound transmitted by the sound receiving member; means for reducing frictional noise, said means associated with the sound receiving member to reduce noise caused by relative movement between a surface and the sound receiving member of the chestpiece in contact with the surface.
    Type: Application
    Filed: December 21, 2005
    Publication date: April 24, 2008
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Thomas Drummond, Hatim Carim, Craig Oster