Inventors:
Wayne D. Brandt - Morton IL, US
Vernon R. Smith - Peoria IL, US
Walt E. Earleson - Morton IL, US
Michael E. Roth - Edwards IL, US
Dale B. Herget - Mapleton IL, US
Steven C. Bray - Dunlap IL, US
Wayne J. Wulfert - East Peoria IL, US
Jeffrey S. Morris - Bartonville IL, US