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Pat. 10003256 United States, Int. Cl.22 H02M 3/07, E21B 47/00. Systems and methods for controlling a voltage multiplier ladder for optimal efficiency and minimal component stress : Appl. N 14/975632 : Filed 18.12.2015 : Pub. 19.06.2018 : / Darren Gould, Jani Petteri Reijonen ; Assignee Schlumberger Technology Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10003256/en?oq=US10003256.html (дата обращения: ДД.ММ.ГГГГ).