KNIFE RIVER AN MDU RESOURCES COMPANY
Mark Identification

KNIFE RIVER AN MDU RESOURCES COMPANY

Serial Number

77184125

Filing Date

May 17, 2007

Registration Date

Jan 22, 2008

Trademark by

KNIFE RIVER CORPORATION

Active Trademark

Classification Information

Construction materials, namely, asphalt, concrete, ready mix concrete, cement mixes, rocks and gravel, lignite and bituminous coal tars, and aggregate material comprised of the forgoing for construction of roads, streets, infrastructure, commercial and residential buildings and subdivisions

Nonmetallic Building Materials

Mining extraction; construction planning, managing, and supervision; construction of roads, streets, infrastructure, commercial and residential buildings and subdivisions

Building Construction and Repair

Mining and mineral exploration services

Computer and Scientific