Patents by Inventor Mark A. Dotson

Mark A. Dotson 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).

  • Patent number: 6019022
    Abstract: A combination screwdriver, scraper and prybar has a handle with an elongated shank terminating in a multi-function blade. The blade has opposed, flat, planar blade faces converging toward and joined by a distal planar end surface which intersects and is perpendicular to the longitudinal axis of the shank. The blade faces are respectfully inclined to the axis at substantially three degrees and substantially seven degrees. The shank may be square or circular in transverse cross-section and, if square, opposed sides of the shank lie in planes perpendicular to the blade faces.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: February 1, 2000
    Assignee: Snap-on Tools Company
    Inventor: Mark A. Dotson