Patents by Inventor Mark Smithson

Mark Smithson 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).

  • Respirator with hinged visor
    Patent number: 6763830
    Abstract: A gas mask has a facepiece defining an interior chamber and an opening spanning a front portion of facepiece. An optical panel visor is mounted in the opening in the front portion of the facepiece. A hinge joins opposite sides of the visor along a vertical line for relative rotational movement of the opposite sides of the optical panel and the facepiece with respect to each other.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: July 20, 2004
    Assignee: Avon Rubber & Plastics, Inc.
    Inventors: Brian E. Davis, Gary M. Dunn, Mark Smithson