Patents by Inventor Lee W. Pfeifer

Lee W. Pfeifer 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).

  • Patent number: 4959932
    Abstract: An improved rain gutter screen having simplified means for installation on roofs having conventional eaves rain gutters. The screening material being horizontal layers of heavy gage, large mesh reinforcing screening and smaller gage, small mesh material facilitating the separation of gravel and twigs or the like from the water and preventing clogging. The front and back edges of the gutter screen using a flexible, bondable material for attachment to the roof support portion and the eave gutter end edge. The gutter screen sections are installed edge to edge along the top of gutter and fastened by vertical pins along the intersecting edges.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: October 2, 1990
    Inventor: Lee W. Pfeifer