参考文献

USV LIMITED; SATHE, Dhananjay, Govind; BHISE, Nandu, Baban; GATNE, Parag, Sukumar; PATNEKAR, Subodh, Shashikant; DEORE, Raviraj, Bhatu; MAHAJAN, Anil, Dinkar Patent: WO2010/41271 A2, 2010 ; Location in patent: Page/Page column 24 ;30 ;