Patents by Inventor Charles M. Krepp

Charles M. Krepp 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).

  • General purpose clipboard
    Patent number: 5046760
    Abstract: A new version of a clipboard comprising of a single piece construction with a top panel and a bottom panel so joined that between are hollow cavities designed to hold drafting aids. The top surface provides a smooth drawing surface on the upper side and a clip to secure paper.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: September 10, 1991
    Inventor: Charles M. Krepp