Patents Assigned to Key Group, Inc.
  • Sheet retainer
    Patent number: D425127
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: May 16, 2000
    Assignee: Key Group, Inc.
    Inventor: Terry D. Mackey
  • Rolled sheet retainer
    Patent number: D426577
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: June 13, 2000
    Assignee: Key Group, Inc.
    Inventors: Terry D. Mackey, Catherine M. Murphy