Patents by Inventor James H. Karls

James H. Karls 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: 5107994
    Abstract: A holder for positioning and displaying charts. The holder comprises a hand-holdable board member, the board member defining at least one and preferably a plurality of generally parallel slot pairs extending therethrough. The slot pairs may be defined by separate slots, or alternatively one or more rollers carried in an aperture formed in the board member to define the respective slots of a pair between opposed roller sides and the wall of the aperture. Accordingly, an individual paper chart can be placed to extend through individual slots of a pair, being wrapped about the roller if present, to place a portion of the chart on one side of the board member with the remainder of the chart positioned in the slots and on the other side of the board member. By this means, several charts may be carried in one hand in a regular array, and portions of the charts may be presented for view, while the remainder of the charts is out of the way, but available for such viewing.
    Type: Grant
    Filed: May 23, 1990
    Date of Patent: April 28, 1992
    Inventor: James H. Karls
  • Patent number: D414219
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: September 21, 1999
    Inventor: James H. Karls