Patents by Inventor Fred J. Selman

Fred J. Selman 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).

  • Sewer and septic tank venting device
    Publication number: 20090044321
    Abstract: A venting device configured to attach to a vent and to reduce malodors emitted from a vent includes a first end, a second end, and a center portion. The second end includes two holes into which a barrier is inserted. The second end also includes a protrusion and a ball configured to rest on the protrusion. When a disruption in air pressure occurs within the venting device, the ball moves upward from the protrusion to allow air to exit the device. The barrier prevents the ball from moving upward beyond the barrier.
    Type: Application
    Filed: August 17, 2007
    Publication date: February 19, 2009
    Inventors: Fred J. Selman, Laura N. Selman