Patents by Inventor Harold P. Pennison

Harold P. Pennison 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).

  • Casing alignment tool
    Patent number: 4681158
    Abstract: An oil well casing alignment tool is disclosed wherein a casing section that has been elevated to an upright position, aligns the upright casing and locks it in a vertical position while permitting the casing to be axially rotated until it locks it into the sealing point of the previous casing section.
    Type: Grant
    Filed: March 13, 1986
    Date of Patent: July 21, 1987
    Assignee: Mobil Oil Corporation
    Inventor: Harold P. Pennison