Patent Information
ÃÛѨÊÓƵ has obtained U.S. Patent Numbers:
5,918,217
6,012,044
6,021,397
6,125,355
6,292,787
7,016,870
7,062,458
7,249,081
7,321,871
7,774,257
7,788,155
7,813,989
7,983,975
8,200,561
8,224,735
8,521,633
8,725,614
Other US and foreign patents pending.