Patents by Inventor Henry F. Ludwig

Henry F. Ludwig 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).

  • Sport card stabilizer
    Patent number: 5011072
    Abstract: A stabilizer for holding sport cards, or other cards, in a vertical to an angled position so that the user can easily view a group of cards by flipping through them. The stabilizer is preferably made from card stock which, in an unfolded position, forms an elongated, rectangular sheet. When the card is properly folded, it forms an angled card rest, and a tab in one portion of the card fits into a slot in the other portion of the card.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: April 30, 1991
    Assignee: Morris Reisman
    Inventor: Henry F. Ludwig