Patents
| Products | Patents |
| 980223 / 980472 / 240108 / 240331 | US Patent #7137615 / US Patent #D625073 / China Patent #CN202007102U |
| 980471 / 240342 | US Patent No. 8,201,807 / US Patent No. 7,878,482 / China Patent No. CN101244797A / China Patent No. CN201056472 / Canada Patent No. CA2621532 / Canada Patent No. CA2621532 |
| 980220 / 240115 | U.S. Patent No: 9,067,772 B2 |