Url https://edisondigital.rutgers.edu/document/QCE02322 Resource class dctype:Text Title [QCE02322] Legal Decision, March 20th, 1875 Creator U.S. Patent Office. Commissioner Thacher, John Marshall 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 1875-03-20 Type Legal Decision Identifier QCE02322 Source 10:890 Relation Prescott, George Bartlett Edison, Thomas Alva Rights Thomas Edison National Historical Park Date Created 1875-03-20 Has Version https://archive.org/details/edisonmicrofilm10/page/n899/mode/1up Archive.org Viewer, Microfilm Series Reel 10 Is Part Of QCE02-F Uri https://edisondigital.rutgers.edu/document/QCE02322 https://edisondigital.rutgers.edu/document/QCE02322 --