Patents by Inventor John E. Lockhart

John E. Lockhart 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).

  • Loose leaf binder revision device and method of using same
    Patent number: 5160208
    Abstract: A quick revision apparatus (22) and method for guiding loose leaf documents (12) across a gap (11) between a pair of mating binder ring members (3A and 3B) to facilitate quick revision of a set of documents (12) held thereby having a pivotally mounted bridge (6A) for spanning the gap (11) which is moved to an operative position by movement of a leaf element (12) thereon from one of the ring members (3B) to the other ring member (3A).
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: November 3, 1992
    Assignee: Revision Qix, Ltd.
    Inventor: John E. Lockhart