Patents by Inventor John Rex Langford

John Rex Langford 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).

  • Educational toy components
    Patent number: 6142848
    Abstract: A constructional toy component (13) which has on at least one edge (11), two portions (15, 16) each of which has associated therewith one of two complementary members (19, 18) the arrangement being such that when two similar edges are brought into abutment but in the opposite sense, the complementary members (19, 18) can interengage if one of the components is initially flexed to effectively vary the spacing between the complementary members thereon. In one form of the invention, the edges are formed of rod like members and thus the component is basically defined by a peripheral frame.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: November 7, 2000
    Assignee: Geo Australia Pty. Limited
    Inventors: Peter Madner, John Rex Langford