Patents by Inventor John H. Watson

John H. Watson 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).

  • Dust control fluids spray arm
    Patent number: 4714293
    Abstract: Provided is a dust control attachment for long wall mining equipment featuring a water spray head fixed on the end of an arm which is mounted in a manner to be movable in the horizontal and vertical planes whereby the spray is substantially directable to any desired situs during mining operations.
    Type: Grant
    Filed: March 17, 1986
    Date of Patent: December 22, 1987
    Assignee: Sun Hydraulics, Inc.
    Inventor: John H. Watson