TREA

Steven K. Roggenkamp

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  • West Chester, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Fabricated liner article and method
    • Patent number 4,688,310
    • Issue date Aug 25, 1987
    • General Electric Company
    • James S. Kelm
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Fabricated liner article and method
    • Patent number 4,628,694
    • Issue date Dec 16, 1986
    • General Electric Company
    • James S. Kelm
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...