United States Patent No. 6,766,376
United States Patent No. 7,716,358
United States Patent No. 8,122,141
United States Patent No. 8,185,611
United States Patent No. 8,327,011
United States Patent No. 8,364,839
United States Patent No. 8,595,372
United States Patent No. 9,762,636
United States Patent No. 9,742,824
United States Patent No. 9,729,594
United States Patent No. 7,490,053
United States Patent No. RE44477
United States Patent No. RE46917
U.S. Pat. App. S/N 60/231,997
U.S. Pat. App. S/N 13/815,040
U.S. Pat. App. S/N 14/160,444
U.S. Pat. App. S/N 15/833,377
U.S. Pat. App. S/N 15/833,517
U.S. Pat. App. S/N 16/015,574