Patents by Inventor Roger Leafgreen

Roger Leafgreen 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).

  • Planing tool for smoothing the edges of drywall panels
    Patent number: 6023846
    Abstract: A tool for smoothing and shaping the edges of drywall panels includes an elongated housing having a base portion and opposed side walls which define with the base portion a straight guide channel. Several cutting members are secured within the channel. Each cutting member has a circular cutting edge, and the several cutting edges are disposed in coplanar alignment parallel to the base portion. Relief passageways are formed in the sidewalls adjacent each cutting member.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: February 15, 2000
    Inventors: Steve Crawford, Roger Leafgreen