Patents by Inventor Harry A. Marsh, Jr.

Harry A. Marsh, Jr. 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).

  • Device for fabrication of tapholes in metallurgical vessels
    Patent number: 4192492
    Abstract: A device for installing a taphole is comprised of a vertical wall with laterally extending base wings which conform specifically to the configuration and contours of refractory blocks and a neck with laterally extending wings which conform specifically to the interior and exterior dimensions of refractory sleeves which are attached to the blocks and form a part of the taphole.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: March 11, 1980
    Assignee: Dresser Industries, Inc.
    Inventor: Harry A. Marsh, Jr.