U.S. Patent Number 5,651,983
Issued July 29, 1997
U.S. Patent Number 5,670,158
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U.S. Patent Number 5,686,106
Issued November 11, 1997
U.S. Patent Number 5,686,105
Issued November 11, 1997
U.S. Patent Number 5,814,336
Issued September 29, 1998
U.S. Patent Number 5,843,479
Issued December 01, 1998
U.S. Patent Number 5,914,132
Issued June 22, 1999
Canada Patent Number 2,156,726
Issued October 17, 2000
France Patent Number 0686034
Issued June 13, 2001
Germany Patent Number 69427466.6-08
Issued June 13, 2001
Great Britian Patent Number 0686034
Issued June 13, 2001
Italy Patent Number 0686034
Issued June 13, 2001
France Patent Number 0825854
Issued March 06, 2002
Belgium Patent Number 0825854
Issued March 06, 2002
Germany Patent Number 0825854
Issued March 06, 2002
Europe Patent Number 0825854
Issued March 06, 2002
Switzerland Patent Number 0825854
Issued March 06, 2002
Great Britian Patent Number 0825854
Issued March 06, 2002
Italy Patent Number 0825854
Issued March 06, 2002
Netherlands Patent Number 0825854
Issued March 06, 2002
Mexico Patent Number 207414
Issued April 05, 2002
Canada Patent Number 2,268,175
Issued April 23, 2002
Canada Patent Number 2,271,569
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Europe Patent Number 0932396
Issued March 12, 2003
Germany Patent Number 69719774.3
Issued March 12, 2003
Netherlands Patent Number 0932396
Issued March 12, 2003
United Kingdom Patent Number 0932396
Issued March 12, 2003
Canada Patent Number 2,271,560
Issued September 23, 2003
Canada Patent Number 2,268,868
Issued March 09, 2004
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