Donald Frederic Bishofberger

Person

  • Waukesha, WI, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Friction stir welding tool

    • Patent number 6,053,391
    • Issue date Apr 25, 2000
    • Tower Automotive, Inc.
    • Robert James Heideman
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR