300 Main Street, Suite 200, Dubuque, IA 52001
Mon – Thurs 8 am – 5 pm, Fri 8 am – 12 pm


3530 Digital Drive
Dubuque, IA 52003-8907
(563) 582-5152
(563) 582-5065 (fax)
  • About

    E91 is an industry leader in the product creation process, with expertise in new product development, sustaining engineering and process automation. We are experienced in many industries, including construction, utility and mining equipment; agricultural and turf care machinery; recreational vehicles; military vehicles; food processing and packaging equipment; commercial and consumer products; and test and assembly equipment.

  • Whom to Contact