参考文献:
Hirst, Gavin C. Arnold, Lee D. Burchat, Andrew Wishart, Neil Calderwood, David Wada, Carol K. Michaelides, Michael R. Ji, Zhiqin Muckey, Melanie Patent: US003/098 A, 003 Location in patent: Page 3 US 0030098 A
参考文献:
Hirst, Gavin C. Arnold, Lee D. Burchat, Andrew Wishart, Neil Wada, Carol K. Michaelides, Michael R. Ji, Zhiqin Muckey, Melanie Patent: US003/99 A, 003