Dynamo Electric Machine or Motor 101 0 Download here USA018 - US390721 Print Rate this article: No rating No.USA18Patent390,415Year1888CountryUnited States of AmericaDate of ApplicationOctober 2, 1888Patent TitleDynamo Electric Machine or Motor Documents to download USA018 - US390721 (.pdf, 177.82 KB) - 108 download(s)