Patents by Inventor Heinz-Dietger Ehrler

Heinz-Dietger Ehrler 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).

  • House animal toilet with automatic self-cleaning
    Patent number: 5791288
    Abstract: A pet toilet, especially a cat toilet, is provided with automatic self-cleaning.
    Type: Grant
    Filed: November 25, 1996
    Date of Patent: August 11, 1998
    Inventor: Heinz-Dietger Ehrler