Patents by Inventor Jeffery C. McMahon

Jeffery C. McMahon 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).

  • Rod elevator insert
    Patent number: 4981316
    Abstract: An insert for use in a rod elevator assembly. The insert is coated with a fusion-bonded nylon coating which is resistant to damage from the rod and which does not damage the plastic coating on the rod. Both inserts in a two-insert assembly are coated, and all surfaces of the inserts may be coated.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: January 1, 1991
    Assignee: Marathon Oil Company
    Inventor: Jeffery C. McMahon