Url https://edisondigital.rutgers.edu/document/QCA06026 Resource class dctype:Text Title [QCA06026], Petition, George Harrington, U.S. Patent Office. Commissioner, January 23rd, 1875 Creator Harrington, George Subject Patent application Patent assignments, licenses, and royalties Multiple telegraphy (duplex, quadruplex) Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1875-01-23 Type Petition Identifier QCA06026 Source 9:113 Relation Edison, Thomas Alva Rights Thomas Edison National Historical Park Date Created 1875-01-23 Has Version https://archive.org/details/edisonmicrofilm9/page/n123/mode/1up Archive.org Viewer, Microfilm Series Reel 9 Is Part Of QCA06-F Recipient U.S. Patent Office. Commissioner Uri https://edisondigital.rutgers.edu/document/QCA06026 https://edisondigital.rutgers.edu/document/QCA06026 --