TREA

James R. Yurchenco

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  • Palo Alto, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Computer trackball
    • Patent number D353370
    • Issue date Dec 13, 1994
    • Microsoft Corporation
    • Stuart Ashmun
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Computer trackball
    • Patent number D347628
    • Issue date Jun 7, 1994
    • Microsoft Corporation
    • Stuart Ashmun
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Pointing device with adjustable clamp attachable to a keyboard
    • Patent number 5,281,958
    • Issue date Jan 25, 1994
    • Microsoft Corporation
    • Stuart Ashmun
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Computer trackball
    • Patent number D342241
    • Issue date Dec 14, 1993
    • Microsoft Corporation
    • Stuart Ashmun
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Trackball for computer
    • Patent number D326261
    • Issue date May 19, 1992
    • Microsoft Corporation
    • Stuart Ashmun
    • D14 - Recording, communication, or information retrieval equipment