Patents by Inventor Ruth Silva

Ruth Silva 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).

  • Nursing bib
    Patent number: D359839
    Type: Grant
    Filed: May 18, 1990
    Date of Patent: July 4, 1995
    Inventors: Ruth Silva, Robert Graham