Commutator for Dynamo Electric Machines 287 0 Download here USA001 - US334823 Print Rate this article: 2.5 No.USA1Patent334,823Year1886CountryUnited States of AmericaDate of ApplicationJanuary 26, 1886 (Filed May 18, 1885)Patent TitleCommutator for Dynamo Electric Machines Documents to download USA001 - US334823 (.pdf, 93.68 KB) - 251 download(s)