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Pat. 10801311 United States, Int. Cl.22 E21B 43/26, B62D 53/06, F04B 17/03, H02P 5/74, H02M 7/04, H02M 7/44. Electric drive fracturing power supply semi-trailer : Appl. N 16/834433 : Filed 30.03.2020 : Pub. 13.10.2020 : / Shuzhen Cui, Rikui Zhang, Dong Liu ; Assignee Yantai Jereh Petroleum Equipment and Technologies Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10801311/en?oq=US10801311.html (дата обращения: ДД.ММ.ГГГГ).