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GR Spring & Stamping, Inc.

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  • Grand Rapids, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Progressive die machine
    • Patent number 6,418,611
    • Issue date Jul 16, 2002
    • GR Spring & Stamping, Inc.
    • Ronald E. Weber
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Progressive die machine and method
    • Patent number 6,389,671
    • Issue date May 21, 2002
    • GR Spring & Stamping, Inc.
    • Ronald E. Weber
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Progressive die machine and method
    • Patent number 6,006,563
    • Issue date Dec 28, 1999
    • GR Spring & Stamping, Inc.
    • Guangyu Zhang
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

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