Библиографическая ссылка на патент
Pat. 9919376 United States, Int. Cl.22 B23K 9/09, B23K 9/10, H02M 3/158, H02J 7/00. Method for controlling a battery-powered welding device, and battery-powered welding device : Appl. N 14/649249 : Filed 21.05.2014 : Pub. 20.03.2018 : / Andreas Starzengruber, Alexander Speigner ; Assignee Fronius International Gmbh ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9919376/en?oq=US9919376.html (дата обращения: ДД.ММ.ГГГГ).