Patents by Inventor Thomas R. Tredup

Thomas R. Tredup 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).

  • Protective face mask
    Patent number: 6374424
    Abstract: A protective face mask with a concavo-convex shield of methyl methacrylate that covers the wearer's entire face. A nose piece at the concave face of the shield presents laterally spaced fingers to engage the wearer's nose on opposite sides for spacing the shield from the face. Temple sidepieces hinged to the shield on opposite sides are engageable over the wearer's ears to hold the nose piece against the wearer's nose, thus securely positioning the mask on the wearer's head.
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: April 23, 2002
    Inventor: Thomas R. Tredup