Patents by Inventor R. Bryce Campbell

R. Bryce Campbell 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).

  • Penta nut and tool set
    Patent number: D563212
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: March 4, 2008
    Inventor: R. Bryce Campbell
  • Combined bolt and female keyway
    Patent number: D567643
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: April 29, 2008
    Inventor: R. Bryce Campbell
  • Combined bolt and male keyway
    Patent number: D568731
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: May 13, 2008
    Inventor: R. Bryce Campbell
  • Nut
    Patent number: D487562
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: March 16, 2004
    Inventor: R. Bryce Campbell
  • Pipe plug
    Patent number: D621480
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: August 10, 2010
    Inventor: R. Bryce Campbell