Patents by Inventor Gerhard Fleischhacker

Gerhard Fleischhacker 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).

  • Covering for a sewer manhole
    Patent number: 5989417
    Abstract: A cover for a sewage shaft comprising a shaft lid (1) including apertures (2) for the passage of sewage, a filtering element (3) spanning the region of the apertures (2) being arranged at the lower side of this lid, wherein the filtering element (3) projects into the apertures (2) and, at its upper side, ends substantially flush with the upper side of the shaft lid (1).
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: November 23, 1999
    Inventor: Gerhard Fleischhacker