Patents by Inventor Gregory E. Duse

Gregory E. Duse 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).

  • Drain opening device
    Patent number: 4096597
    Abstract: An apparatus for opening clogged water drains by the force of a high speed water jet. The water is propelled by the manual operation of telescoping two cylinders together thereby reducing their volume. The water-filled cylinders are effectively sealed by the use of flexible plastic membrane.
    Type: Grant
    Filed: September 30, 1976
    Date of Patent: June 27, 1978
    Inventor: Gregory E. Duse