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Pat. 10541636 United States, Int. Cl.22 H02P 23/28, B23D 45/16, B23D 47/12, H02M 1/08, H02M 7/06, H02P 27/06. Electric working machine : Appl. N 15/484479 : Filed 11.04.2017 : Pub. 21.01.2020 : / Akihiro Nakamoto, Itsuku Kato, Yuki Kawai ; Assignee Makita Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10541636/en?oq=US10541636.html (дата обращения: ДД.ММ.ГГГГ).