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Richard R. Lewchuk

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  • Allison Park, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Mounting system for an add on glass panel
    • Patent number 4,134,240
    • Issue date Jan 16, 1979
    • PPG Industries, Inc.
    • John P. Bologna
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Glazing tool
    • Patent number 4,118,911
    • Issue date Oct 10, 1978
    • PPG Industries, Inc.
    • Richard R. Lewchuk
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Add-on multiple glazing with hygroscopic material
    • Patent number 3,971,178
    • Issue date Jul 27, 1976
    • PPG Industries, Inc.
    • Renato J. Mazzoni
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS