参考文献:
Blake, James F. Boyd, Steven Armen De Meese, Jason Fong, Kin Chiu Gaudino, John J. Kaplan, Tomas Marlow, Allison L. Seo, Jeongbeob Thomas, Allen A. Tian, Hongqi Cohen, Frederick Young, Wendy B. Patent: US27/238726 A, 27 Location in patent: Page/Page column 8 US 27238726 A
参考文献:
Blake, James F. Boyd, Steven De Meese, Jason Gaudino, John J. Marlow, Allison L. Seo, Jeongbeob Thomas, Allen A. Tian, Hongqi Patent: US27/97537 A, 27 Location in patent: Page/Page column 8 US 2797537 A