Search results

  • Descriptor Systems
    Descriptor Systems
    (319) 362-3906
    PO BOX 461, 52302  Marion

    Descriptor Systems was founded in 1984 by Joel Barnum and Tom Gaven (who has since moved on to to other things). Since then, we have been in the technical training business, providing courseware and training services to companies across the United States, Canada, Europe and Asia. We specialize in p…