Thomas Edison got a patent for his mimeograph on 8th August 1876. The US patent number 180,857 was for “Autographic Printing” and covered electric pen for making the stencil and the flatbed duplicating press.
Thomas Edison got a patent for his mimeograph on 8th August 1876. The US patent number 180,857 was for “Autographic Printing” and covered electric pen for making the stencil and the flatbed duplicating press.