参考文献
Sumner, Charles Edwan; Hembre, Robert Thomas; Lange, David; Lavoie, Gino Georges; Tennant, Brent Alan; Floyd, Thomas Richard; Davenport, Bryan Wayne; Compton, Daniel Burts; Bays, Joseph Nathaniel
Patent: US2006/205977 A1, 2006 ;
Location in patent: Page/Page column 7-10 ;