Patents by Inventor Donald Keir Robertson

Donald Keir Robertson 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).

  • Container companion plate
    Patent number: 4114768
    Abstract: A container companion plate comprising a substantially longitudinal member which is provided at each extremity with an internally mounted extension arm, said longitudinal member having one or more container engaging means provided on its upper surface and one or more vehicle lock receiving means provided in its lower surface.
    Type: Grant
    Filed: June 29, 1977
    Date of Patent: September 19, 1978
    Inventor: Donald Keir Robertson
  • Cargo support for the bed of a truck or the like
    Patent number: D248228
    Type: Grant
    Filed: September 3, 1976
    Date of Patent: June 20, 1978
    Inventor: Donald Keir Robertson