Patents by Inventor Andrew D. Cowles

Andrew D. Cowles 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).

  • Tire valve stem and cap with hat
    Patent number: D624875
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: October 5, 2010
    Inventor: Andrew D. Cowles
  • Tire valve stem cap
    Patent number: D627294
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: November 16, 2010
    Inventor: Andrew D. Cowles