Patents by Inventor David M. Graybill

David M. Graybill 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: 5833201
    Abstract: A portable collapsible easel for use by an artist including a lower base member for storing artist materials and the like and a two-piece cover positionable over the open upper surface of the base member when not in use. Adjustable length support legs are connected to the base member for pivotal movement and downwardly extension from a storage position against the base member to an in-use position supporting the base member generally horizontally above the ground. The cover, having a support panel pivotally connected to a larger easel back panel, is pivotally movable in two stages form the stored or closed position to the open in-use position wherein the support panel laterally extends from, and is supported directly adjacent the lower base member.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: November 10, 1998
    Inventor: David M. Graybill