Douglass

(noun.) United States abolitionist who escaped from slavery and became an influential writer and lecturer in the North (1817-1895).

编辑:奥马尔

• A saw which planes, as well as severs, is shown in patents to Douglass, Nos. Edward W. Byrn. 十九世纪发明进展.
• Nicholas Douglass, however, invented a new system of dovetailing, and great improvements have been made in the system of illuminating. 威廉·亨利·杜利特. 世纪发明.

录入:莫伊拉