Patents by Inventor Robert K. Cloyd

Robert K. Cloyd 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).

  • Drinking straw
    Patent number: D243817
    Type: Grant
    Filed: May 21, 1975
    Date of Patent: March 29, 1977
    Inventor: Robert K. Cloyd