TREA

David Winston

Follow

Person

  • Winchester, MA, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Electronic stethoscope
    • Patent number 6,005,951
    • Issue date Dec 21, 1999
    • StethTech Corporation
    • James A. Grasfield
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Electronic stethoscope
    • Patent number 6,002,777
    • Issue date Dec 14, 1999
    • StethTech Corporation
    • James A. Grasfield
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Communication with a computer using telephones
    • Patent number 5,864,607
    • Issue date Jan 26, 1999
    • Compaq Computer Corp.
    • P. Bradley Rosen
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Electronic stethoscope
    • Patent number 5,825,895
    • Issue date Oct 20, 1998
    • StethTech Corporation
    • James A. Grasfield
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Chestpiece of a stethoscope
    • Patent number D389575
    • Issue date Jan 20, 1998
    • James A. Grasfield
    • D24 - Medical and laboratory equipment
  • Information Patent Grant

    Housing element of a stethoscope
    • Patent number D389577
    • Issue date Jan 20, 1998
    • James A. Grasfield
    • D24 - Medical and laboratory equipment
  • Information Patent Grant

    Stethoscope
    • Patent number D389576
    • Issue date Jan 20, 1998
    • James A. Grasfield
    • D24 - Medical and laboratory equipment
  • Information Patent Grant

    Binaurals of a stethoscope
    • Patent number D389241
    • Issue date Jan 13, 1998
    • James A. Grasfield
    • D24 - Medical and laboratory equipment

Patents Applicationslast 30 patents