Patents by Inventor Marvin D. Parlette, Jr.

Marvin D. Parlette, Jr. 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).

  • Respiratory mouthpiece
    Patent number: 4030493
    Abstract: A respiratory mouthpiece for a positive pressure breathing apparatus made as an integral flexible elastomer molding in an oval concave shape having a ridge along the inner periphery to provide a seal against the outer surfaces of the mouth when pressed against the face and an opening in the center of the mouthpiece defined by a tube to fit over a mouthpiece holder of a breathing apparatus.
    Type: Grant
    Filed: June 18, 1976
    Date of Patent: June 21, 1977
    Assignee: Conceptual Products, Inc.
    Inventors: William T. Walters, Marvin D. Parlette, Jr.