Url https://edisondigital.rutgers.edu/document/NS80AAH1 Resource class dctype:Text Title [NS80AAH1], Patent Application, Thomas Alva Edison, March 20th, 1880 Creator Edison, Thomas Alva Subject Ore milling (non-iron ore) Chemicals, chemical products, and chemical processes Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1880-03-20 Type Patent Application Identifier NS80AAH1 Source 162:721 Rights Thomas Edison National Historical Park Date Created 1880-03-20 Has Version https://archive.org/details/edisonmicrofilm162/page/n730/mode/1up Archive.org Viewer, Microfilm Series Reel 162 Is Part Of NS80-F Uri https://edisondigital.rutgers.edu/document/NS80AAH1 https://edisondigital.rutgers.edu/document/NS80AAH1 --