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Covered by one or more of the following U.S. Patents:
5,330,064; 5,386,787;
5,456,191; 5,471,922;
5,483,782; 5,503,087;
5,628,522; 5,746,063;
5,765,386; 5,816,051;
5,931,018; 5,957,309;
6,062,401; 6,131,399;
6,149,120; 6,173,575;
6,322,180; 6,366,313;
6,419,098; 6,474,757;
6,974,042; 7,419,063;
D480,528; D481,513
& Canadian patent
2,169,336.
Other U.S. & foreign patents pending.
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