TREA

Nelson K. Harrison

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  • Berwyn, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Extrusion press and method
    • Patent number 4,346,578
    • Issue date Aug 31, 1982
    • Nelson K. Harrison
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of and machine for extruding
    • Patent number 4,308,742
    • Issue date Jan 5, 1982
    • Nelson K. Harrison
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...