CA 2,600,926
US 7,912,673
EP (FR, UK, DE) 1,877,726
AU 2006222458
US 8,032,327
JP 4,871,352
EP (FR, UK, DE) 2,278,271
IN 266,573 
US 9,325,974
CA 2,835,306
CN 103,649,680 B
EM 009203334-0001
EM 009203334-0002
EM 009203334-0003
EM 009203334-0004
EM 009203334-0005
EM 009203334-0006
EP (FR, UK, DE) 2,718,668
CN 220,206,623 U
CN 220,570,839 U
CN 220,982,189 U