Improvements of the cos (phi) of arc welding installations

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    Enhanced power factor correction for welding and cutting power supp...

    • Patent number 9,162,310
    • Issue date Oct 20, 2015
    • Illinois Tool Works Inc.
    • Steven J. Geissler
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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    Generator for arc welder with high power factor

    • Patent number 7,576,299
    • Issue date Aug 18, 2009
    • Selco S.r.l.
    • Gianni Rossetto
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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    Method of designing and manufacturing welding-type power supplies

    • Patent number 6,713,721
    • Issue date Mar 30, 2004
    • Illinois Tool Works Inc.
    • Bruce P. Albrecht
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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    D.C. power unit assembly including unitized single-phase D.C. power...

    • Patent number 4,943,904
    • Issue date Jul 24, 1990
    • Conrac Corporation
    • Stanley R. Van Antwerp
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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    3581050

    • Patent number 3,581,050
    • Issue date May 25, 1971
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    3067377

    • Patent number 3,067,377
    • Issue date Dec 4, 1962
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    2276060

    • Patent number 2,276,060
    • Issue date Mar 10, 1942
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    1938618

    • Patent number 1,938,618
    • Issue date Dec 12, 1933
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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    1665869

    • Patent number 1,665,869
    • Issue date Apr 10, 1928
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents