> NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION Minnesota Since: 1997 NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION
> NORTH METRO ORTHOTICS AND PROSTHETICS, INC. Minnesota Since: 2002 NORTH METRO ORTHOTICS AND PROSTHETICS, INC.
> NORTHERN ENGINEERING AND MANUFACTURING, INC Minnesota Since: 1993 NORTHERN ENGINEERING AND MANUFACTURING, INC
> NORTH AMERICAN SYSTEMS INTERNATIONAL INC Minnesota Since: 1993 NORTH AMERICAN SYSTEMS INTERNATIONAL INC
