Patents by Inventor Raoul L. Madrid

Raoul L. Madrid 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).

  • Patent number: D421786
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: March 21, 2000
    Inventor: Raoul L. Madrid