What people are saying - Write a review
We haven't found any reviews in the usual places.
Other editions - View all
African-American Inventions America Andrew Jackson Beard Apparatus Attachment Automatic became Black Car-Couplings carbon filaments Cincinnati compartment cooling creation Discoveries and Inventions dough draftsmen Dudley Dudley's E.J. Lubricator easier electric lamps electric light Electric Railway Elijah McCoy evaporator farm father Frederick McKinley Jones fruit press Garrett Gas Engines Granville hair harpoon heat improved incandescent industry Inventions by African-Americans Inventor Johnson juice July July 12 June 05 Lewis H Lewis Latimer Lewis Temple light bulb light system living Location locking device Lynn machine manufacturing Massachusetts Matzelinger mechanical Morgan moved multiple-effect evaporator multiplexor Norbert Rillieux North Carolina OH Date patent office President Purvis racial railroad cars Refrigeration Richardson Sept shank shoe slaves Steam sugar Switch Temple's tion toggle harpoon Toggle Iron traffic light train Unknown Date weighted random pattern whaling Woods Invention