Patents by Inventor Robert L. Spillman

Robert L. Spillman 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: 4676547
    Abstract: A portable knockdown-type stool for use by a spectator of a sporting event features a seat and frame normally supported in elevated relation to the ground by a single, readily detachable leg or post and having a detachable, stabilizing handle or bar disposed in laterally offset relation to the seat and adjustable between relatively upwardly extended, or downwardly retracted position with respect to the seat. In its retracted position, the handle provides a convenient mean for carrying the stool from place to place and when extended it provides either a back rest or prop for a person seated on the stool.
    Type: Grant
    Filed: November 4, 1986
    Date of Patent: June 30, 1987
    Inventor: Robert L. Spillman