Url https://edisondigital.rutgers.edu/document/MU125 Resource class dctype:Text Title [MU125], Letter from Francis Robbins Upton, Edison Lamp Co to Edison Electric Light Co, Edward Hibberd Johnson, April 3rd, 1889 Creator Edison Lamp Co Upton, Francis Robbins Subject Competition and market structure Patent interference Incandescent lamp Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1889-04-03 Type Letter Identifier MU125 Source 95:848 Relation Sawyer-Man Electric Co Westinghouse Electric Co Rights Thomas Edison National Historical Park Date Created 1889-04-03 Has Version https://archive.org/details/edisonmicrofilm95/page/n857/mode/1up Archive.org Viewer, Microfilm Series Reel 95 Is Part Of MU12-F Recipient Edison Electric Light Co Johnson, Edward Hibberd Uri https://edisondigital.rutgers.edu/document/MU125 https://edisondigital.rutgers.edu/document/MU125 --