USA Patent No. 7,670,612 - EXPIRED

USA Patent No. 8,361,497 - EXPIRED

USA Patent No. 9,241,911 - EXPIRED

USA Patent No. 9,539,216 - EXPIRED

Australia Patent No. 2003220689 - EXPIRED

New Zealand Patent No. 220,689 - EXPIRED

Canada Patent No. 2,481,486 - EXPIRED