Patents Assigned to Stry-Lenkoff Co.
  • Combined sticker and invisible ink game
    Patent number: 6152449
    Abstract: An association game including an overall image a portion of which is in latent invisible form to be developed by a marking means to provide an identifying configuration for a visible portion movably compatible with the latent image developed portion.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: November 28, 2000
    Assignee: Stry-Lenkoff Co.
    Inventor: Roger J. Lenkoff
  • Power of observation invisible ink game
    Patent number: 5217231
    Abstract: A power of observation game including two sets of visible images with each set including visible images substantially corresponding and with a preselected portion of at least one corresponding image of one set of visible images being visibly incomplete with the completing portion being printed invisibly to be artistically developed visible by an observing participant with a marking member to confirm correctness.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: June 8, 1993
    Assignee: Stry-Lenkoff Co.
    Inventor: Thomas J. Landis
  • Puzzle game
    Patent number: 4586714
    Abstract: A puzzle game and a method of manufacturing the same including separate geometric segments of a total picture image removably fastened in jumbled fashion in a first defined area and a visibly marked grid in a second defined area forming the same geometrically shaped segments as in the first area whereby the jumbled segments can be transferred from the first area to the second area to form a correct picture image within the visible grid.
    Type: Grant
    Filed: December 13, 1984
    Date of Patent: May 6, 1986
    Assignee: Stry-Lenkoff Co.
    Inventors: Leon G. Lenkoff, Roger J. Lenkoff, Patrick J. Garry
  • Invisible ink quiz game
    Patent number: 4514177
    Abstract: A game device including first and second areas with the first area having a number of visible questions, each having a visible identifying indicia associated therewith and at least two visible answers with invisibly marked designations indicating correctness of the answer of the question responded to and a second defined area having random chance selection means to indicate the question to be responded to by a player.
    Type: Grant
    Filed: January 23, 1984
    Date of Patent: April 30, 1985
    Assignee: Stry-Lenkoff Co.
    Inventor: Leon G. Lenkoff