TREA

Harry C. van den Nieuwelaar

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  • Gilze, NL
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ground rods and apparatus for forming and placing such rods
    • Patent number 4,921,217
    • Issue date May 1, 1990
    • Erico International Corporation
    • Anton M. Kies
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Tapered rolled thread bar joint
    • Patent number 4,870,848
    • Issue date Oct 3, 1989
    • Erico International Corporation
    • Anton M. Kies
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for rolling tapered threads on bars
    • Patent number 4,819,469
    • Issue date Apr 11, 1989
    • Erico International Corporation
    • Anton M. Kies
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...