Patente

US-Patente

6,388,813

6,536,045

6,847,492

7,184,217

8,361,260

8,693,102

8,974,620

9,104,256

9,128,545

9,274,625

9,295,297

9,471,163

9,526,290

9,968,155

10,070,678

Kanada-Patent

2,386,043

Europäische Patente

1502146

1517791