Granville Woods' Railway Telegraphy Patent No. 373,383
As a trailblazing inventor, Granville Woods set out to develop the railroad telegraph. This device transmitted messages through static electricity between moving trains. His invention made it…
Thomas Edison's Electric Vote Recorder
On June 1, 1869, Thomas Edison was granted a patent for the Electric Vote Recorder, U.S. Patent No. 90,646. While he is known for inventing the light bulb and the phonograph, Thomas Edison is also…
Patent History: Method of Preparing Autographic Stencils for Printing (Mimeography)
On this day in 1876, Thomas Edison received a patent for the Mimeograph, entitled “Method of Preparing Autographic Stencils for Printing,” U.S Patent No. 224,665. The Edison’s invention involved a…