Patents by Inventor Karl Heinz Teufel

Karl Heinz Teufel 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).

  • Variable frame for the reception of naturally stiff display articles
    Patent number: 4014119
    Abstract: A frame for displaying sheets which has a generally U-shaped track for placement over one or more edges of the sheet. The track has a center section and a pair of spaced-apart legs protruding from the center section, the spacing between the legs being greater than the thickness of the sheet so that sheets of varying thicknesses can be received in the track. One of the legs depends at an acute angle from the center section towards the other leg and has itself an L-shaped cross-section so that it ends in a protrusion extending away from a remainder of that leg and the center section. A triangular tightening bar has a pair of perpendicular sides and an angularly inclined side joining the perpendicular sides. The perpendiculr sides engage the sheet and the center portion, respectively.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: March 29, 1977
    Inventor: Karl Heinz Teufel
  • Watering device for domestic animals
    Patent number: D470631
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: February 18, 2003
    Inventor: Karl-Heinz Teufel