参考文献
Jenkins, Thomas E.; Husfeld, Craig O.; Seroogy, Julie D.; Wray, Jonathan W.
Patent: US2011/262359 A1, 2011 ;
US 20110262359 A1
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Jenkins, Thomas E.; Husfeld, Craig O.; Seroogy, Julie D.; Wray, Jonathan W.
Patent: US2011/262360 A1, 2011 ;
US 20110262360 A1