Patents by Inventor Gregory L. Beyers

Gregory L. Beyers 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).

  • Chalk box
    Patent number: 6289597
    Abstract: A chalk box for producing a chalk line without leakage of chalk dust from within. The chalk box has a chalk-filled chamber that houses a spool and a flexible chalk line. The chalk line extends outwardly around a guidepost and through a fibrous tube. The fibrous tube snugly hugs the flexible line, preventing chalk dust from leaking through the tube. The chalk dust impregnating the flexible line provides lubrication for its passage through the fibrous tube. The present invention also includes a built-in pencil sharpener isolated from the chalk dust, for the convenience of the user.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: September 18, 2001
    Inventor: Gregory L. Beyers
  • Chalk box
    Patent number: D429471
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: August 15, 2000
    Inventor: Gregory L. Beyers
  • Double-ended dual blade utility knife
    Patent number: D435418
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: December 26, 2000
    Assignee: Gregory L. Beyers
    Inventor: Gregory L. Beyers