Patents by Inventor Wilhelm Rasch, deceased

Wilhelm Rasch, deceased 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).

  • Pool cleaners
    Patent number: 4168557
    Abstract: An electrically driven endless track vehicle draws water through a filter compartment and expels the water normal to the surface on which the vehicle runs. An unbalanced float and random timing of a reversing switch causes the vehicle to traverse a pool floor randomly.
    Type: Grant
    Filed: December 2, 1977
    Date of Patent: September 25, 1979
    Inventors: Wilhelm Rasch, deceased, Gertrud Rasch, heiress