Commutator for Dynamo Electric Machines 113 0 Download here USA015 - US382282 Print Rate this article: No rating No.USA15Patent382,845Year1888CountryUnited States of AmericaDate of ApplicationMay 15, 1888Patent TitleCommutator for Dynamo Electric Machines Documents to download USA015 - US382282 (.pdf, 252.85 KB) - 114 download(s)