Patents by Inventor Randolph Wrobbel

Randolph Wrobbel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Drywall marking and scoring guide
    Patent number: 6289594
    Abstract: A drywall marking and scoring guide tool having a generally T shape that includes a U-shaped top channel to slidably engage the edge of a drywall sheet, the top channel having a perpendicular stem extending from the channel and incorporating a plurality of guide apertures incrementally spaced along the stem's length. The guide apertures to receive a marking or scoring device so as the guide is drawn down the length of a drywall sheet the surface of the sheet is scored or marked.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: September 18, 2001
    Inventor: Randolph Wrobbel
  • DRYWALL MARKING AND SCORING GUIDE
    Publication number: 20010020334
    Abstract: A drywall marking and scoring guide tool having a generally T shape that includes a U-shaped top channel to slidably engage the edge of a drywall sheet, the top channel having a perpendicular stem extending from the channel and incorporating a plurality of guide apertures incrementally spaced along the stem's length. The guide apertures to receive a marking or scoring device so as the guide is drawn down the length of a drywall sheet the surface of the sheet is scored or marked.
    Type: Application
    Filed: September 17, 1998
    Publication date: September 13, 2001
    Inventor: RANDOLPH WROBBEL