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Robert Richard Zielonka

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  • Enfield, CT, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hole saw
    • Patent number D789428
    • Issue date Jun 13, 2017
    • Irwin Industrial Tool Company
    • Joseph Thomas Novak
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Coated hole cutter
    • Patent number 9,586,270
    • Issue date Mar 7, 2017
    • Irwin Industrial Tool Company
    • Robert Richard Zielonka
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Hole cutter with extruded cap
    • Patent number 9,434,033
    • Issue date Sep 6, 2016
    • Irwin Industrial Tool Company
    • Joseph Thomas Novak
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Hole saw
    • Patent number D765159
    • Issue date Aug 30, 2016
    • Irwin Industrial Tool Company
    • Joseph Thomas Novak
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Hole saw
    • Patent number D711441
    • Issue date Aug 19, 2014
    • Irwin Industrial Tool Company
    • Joseph Thomas Novak
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Hole saw
    • Patent number D701544
    • Issue date Mar 25, 2014
    • Irwin Industrial Tool Company
    • Joseph Thomas Novak
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Hole saw
    • Patent number D692470
    • Issue date Oct 29, 2013
    • Irwin Industrial Tool Company
    • Joseph Thomas Novak
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Hole saw
    • Patent number D690334
    • Issue date Sep 24, 2013
    • Irwin Industrial Tool Company
    • Robert Richard Zielonka
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Hole saw
    • Patent number D687472
    • Issue date Aug 6, 2013
    • Irwin Industrial Tool Company
    • Joseph Thomas Novak
    • D15 - Machines not elsewhere specified

Patents Applicationslast 30 patents

  • Information Patent Application

    COATED HOLE CUTTER
    • Publication number 20110170972
    • Publication date Jul 14, 2011
    • Irwin Industrial Tool Company
    • Robert Richard Zielonka
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR