Url https://edisondigital.rutgers.edu/document/PT020128 Resource class dctype:Text Title [PT020128], Patent Application, Thomas Alva Edison, August 9th, 1880 Creator Edison, Thomas Alva Subject Telegraph Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1880-08-09 Type Patent Application Identifier PT020128 Source 45:711 Rights Thomas Edison National Historical Park Date Created 1880-08-09 Has Version https://archive.org/details/edisonmicrofilm45/page/n723/mode/1up Archive.org Viewer, Microfilm Series Reel 45 Is Part Of PT020-F Uri https://edisondigital.rutgers.edu/document/PT020128 https://edisondigital.rutgers.edu/document/PT020128 --