R&W Realty Co. leased offices to three companies in the Smithfield Executive Center. * MJ Datacorp has leased 5,200 s/f at 7 Thurber Blvd., * Apache Mills has leased 2,900 s/f at 9 Thurber Blvd., * and Ultrasound Inc. has leased 1,100 s/f at 11 Thurber Blvd.