Mark Identification

INTENSION

Serial Number

78063206

Filing Date

May 11, 2001

Registration Date

Mar 25, 2003

Trademark by

MDU RESOURCES GROUP INC.

Classification Information

POST TENSION CABLE SYSTEMS COMPRISING PLASTIC ENCAPSULATED 7-STRAND WIRE, ANCHORS AND LOCKING WEDGES USED IN CONCRETE CONSTRUCTION FOR PROVIDING POST CONCRETE POUR FOUNDATION COMPRESSION

Metal Goods

INSTALLATION OF POST TENSION CABLE SYSTEMS FOR CONCRETE CONSTRUCTION

Building Construction and Repair