Patents by Inventor Wilburn Cleatus Douglas

Wilburn Cleatus Douglas 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).

  • Article handling apparatus
    Patent number: 4113117
    Abstract: Drywall boards are lifted from the bed of a truck to an extensible conveyor, which is supported by the bed of the truck, for transport from the truck to a building under construction. The drywall boards are disposed in two stacks on the truck bed with the conveyor being disposed along the longitudinal central axis of the truck bed so that a board from each stack is automatically disposed on the conveyor in sequence.
    Type: Grant
    Filed: November 22, 1976
    Date of Patent: September 12, 1978
    Inventors: Waymon Joe Douglas, Wilburn Cleatus Douglas