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Pat. 10861656 United States, Int. Cl.22 H02M 7/217, H01H 3/26. Spring-loaded drive for a high-voltage power switch and method for operating the spring-loaded drive : Appl. N 16/310048 : Filed 16.05.2017 : Pub. 08.12.2020 : / Thomas Hilker ; Assignee Siemens Ag ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10861656/en?oq=US10861656.html (дата обращения: ДД.ММ.ГГГГ).