Patents by Inventor William G. Crawford

William G. Crawford 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).

  • Metallic powder fluid suspension
    Patent number: 4023289
    Abstract: A liquid vehicle, holding metallic particles in sustained suspension and usable for viewable aesthetic display purposes, the vehicle being a solution of water, soap, and optional coloring agent.
    Type: Grant
    Filed: February 2, 1976
    Date of Patent: May 17, 1977
    Inventor: William G. Crawford