U.S. Patent 5,142,806
U.S. Patent 5,276,988
U.S. Patent 5,343,650
U.S. Patent 6,618,976
U.S. Patent 7,204,052
U.S. Patent 7,356,962
U.S. Patent 7,458,179
U.S. Patent 7,493,721
U.S. Patent 7,707,762B1
U.S. Patent 7,721,482B1
U.S. Patent 7,739,824 B1
U.S. Patent 7,752,797 B1
U.S. Patent 7,757,422B1
U.S. Patent 7,757,423B1
U.S. Patent 7,886,476 B1
U.S. Patent 7,905,045 B1
U.S. Patent 7,941,959 B1
U.S. Patent 7,954,273B1
U.S. Patent 8,015,744B1
U.S. Patent 8,112,933 B1
U.S. Patent 8,156,679B1
U.S. Patent 8,191,302 B1
U.S. Patent 8,201,353 B1
U.S. Patent 8,205,375 B1
U.S. Patent 8,230,636B1
U.S. Patent 8,316,574B1
U.S. Patent 8,347,544 B1
U.S. Patent 8,429,845B1
U.S. Patent D472,166
U.S. Patent D507,620
U.S. Patent D526,380
U.S. Patent D533,618
U.S. Patent D537,499
U.S. Patent D544,063
U.S. Patent D544,564
U.S. Patent D548,811
U.S. Patent D556,290
U.S. Patent D573,443
U.S. Patent D584,789
U.S. Patent D586,875
U.S. Patent D588,228
U.S. Patent D588,672
U.S. Patent D600,108
U.S. Patent D600,311S
U.S. Patent D600,312
U.S. Patent D600,772
U.S. Patent D601,736S
U.S. Patent D601,737S
U.S. Patent D602,556S
U.S. Patent D604,382S
U.S. Patent D604,383S
U.S. Patent D606,155S
U.S. Patent D606,156S
U.S. Patent D606,157S
U.S. Patent D606,158S
U.S. Patent D613,811S
U.S. Patent D619,189S
U.S. Patent D627,851S
U.S. Patent D634,390S
U.S. Patent D635,633S
U.S. Patent D635,634S
U.S. Patent D657,013S
U.S. Patent D666,689 S
U.S. Patent D672,422S
U.S. Patent D692,088S
U.S. Patent RE39,465
U.S. Patent RE40,216
U.S. Patent RE40,216 C1
U.S. Reg. 1,835,382
U.S. Reg. 1,849,858
U.S. Reg. 2,322,963
U.S. Reg. 2,698,606
U.S. Reg. 2,803,125
U.S. Reg. 2,885,336
U.S. Reg. 3,360,664
U.S. Reg. 3,385,512
U.S. Reg. 3,466,163
U.S. Reg. 3,478,909
U.S. Reg. 3,478,910
U.S. Reg. 3,596,207
U.S. Reg. 3,760,148
U.S. Reg. 4,328,540
U.S. Reg. 4,328,541
U.S. Reg. 4,328,542
U.S. Reg. 4,328,543
