Patents by Inventor Rufus A. Parker

Rufus A. Parker 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).

  • Valve lock
    Patent number: D348306
    Type: Grant
    Filed: January 14, 1992
    Date of Patent: June 28, 1994
    Inventor: Rufus A. Parker
  • Valve lock
    Patent number: D630300
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: January 4, 2011
    Inventor: Rufus Parker
  • Valve lock
    Patent number: D755351
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: May 3, 2016
    Inventor: Rufus A. Parker