TREA

Gerrit W. Tichelaar

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  • Emmasingel, NL
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of and welding torch for arc welding
    • Patent number 4,321,454
    • Issue date Mar 23, 1982
    • U.S. Philips Corporation
    • Gerardus A. M. Willems
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Method of and welding torch for arc welding
    • Patent number 4,234,778
    • Issue date Nov 18, 1980
    • U.S. Philips Corporation
    • Gerardus A. M. Willems
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Method of and device for arc welding
    • Patent number 4,174,477
    • Issue date Nov 13, 1979
    • U.S. Philips Corporation
    • Wilhelmus G. Essers
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Welding torch for plasma-MIG-welding
    • Patent number 4,146,773
    • Issue date Mar 27, 1979
    • U.S. Philips Corporation
    • Gerardus A. M. Willems
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Method of and device for plasma MIG welding
    • Patent number 4,142,090
    • Issue date Feb 27, 1979
    • U.S. Philips Corporation
    • Wilhelmus G. Essers
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Device and welding torch for plasma-mig-welding
    • Patent number 4,122,328
    • Issue date Oct 24, 1978
    • U.S. Philips Corporation
    • Wilhelmus Gerardus Essers
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Method of and apparatus for arc welding
    • Patent number 4,016,397
    • Issue date Apr 5, 1977
    • U.S. Philips Corporation
    • Wilhelmus Gerardus Essers
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR