Patents by Inventor Donald F. McLean

Donald F. McLean 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).

  • Video display arrangements
    Patent number: 4125858
    Abstract: For a computerized radiographic apparatus, providing a cross-sectional representation of absorption of radiation in the body of a patient, there is provided a television standard display of cross-section. The display can be high-definition monochrome or in color. An arrangement is provided in which the high definition monochrome is displayed with low saturation color-wash superimposed thereon to highlight significant features in the monochrome picture.
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: November 14, 1978
    Assignee: EMI Limited
    Inventors: Godfrey N. Hounsfield, Donald F. McLean
  • Drill steel idler guide
    Patent number: 3951470
    Abstract: A drill steel idler guide having an internal sleeve rotatably supported in a base by means of ball bearings fitting in opposed annular grooves in the sleeve and base, said sleeve having a bore through which a drill steel can slidably fit. Means is provided for directing pressure air through the base and into an annular space between the base and the sleeve.
    Type: Grant
    Filed: May 1, 1975
    Date of Patent: April 20, 1976
    Assignee: Bralorne Resources Limited
    Inventor: Donald F. McLean
  • Garden hose
    Patent number: D469520
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: January 28, 2003
    Inventor: Donald F. McLean