The products that are shown are protected under license by one or more of the following patents: U.S. Patent Numbers 4896470, 5072558, 5436425, 5440842, 5755065, 5770286, 5788398, 5839235, 5897102, 6017165, 6040546, 6098356, 6108910, 6151850, 6176051, 6380508, 6513287 and U.S. and Foreign Patents Pending.

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