Inventors:
Jeff A. Lambert - Conroe TX, US
James C. Garrett - Kingwood TX, US
Kenneth L. Cambern - Pampa TX, US
Joel M. Ferland - Pampa TX, US
Jay D. Furnish - Pampa TX, US
Donald W. Johnson - Pampa TX, US
Michael R. Zemanek - Pampa TX, US
James R. Cirone - Pampa TX, US
Calvin R. Blankenship - Lindsay OK, US