Patents by Inventor Mark L. Landsberg

Mark L. Landsberg 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: 4209173
    Abstract: Crossword puzzle game equipment is disclosed which includes a game board having an array of columns and rows of side-by-side spaces that are sequentially numbered but do not define a puzzle pattern. The game equipment further includes a clue book having a plurality of crossword puzzle clues or definitions printed thereon and a puzzle pattern defining list of selected numbers of spaces which are to be blacked out or otherwise designated as non-playing spaces to form the puzzle pattern. The clue book is preferably formed for free-standing support in a generally vertical orientation proximate the game board to act as a privacy shield for competition between multiple players having the same game equipment and simultaneously solving the same crossword puzzle. Optionally, the clue book is mounted to a foldable game board to provide the privacy shield and a clue support structure.
    Type: Grant
    Filed: July 20, 1978
    Date of Patent: June 24, 1980
    Assignee: Omnion, Incorporated
    Inventors: Alexander Curtis, Mark L. Landsberg, Edwin J. Meyers