Url https://edisondigital.rutgers.edu/document/D8370ZCU Resource class dctype:Text Title [D8370ZCU], Letter from Hale and Walcott to Grosvenor Porter Lowrey, September 27th, 1883 Creator Hale and Walcott Subject International business operations Patent infringement Multiple telegraphy (duplex, quadruplex) Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1883-09-27 Type Letter Identifier D8370ZCU Source 70:1034 Relation Welch, Ebenezer Baker Rights Thomas Edison National Historical Park Date Created 1883-09-27 Has Version https://archive.org/details/edisonmicrofilm70/page/n1043/mode/1up Archive.org Viewer, Microfilm Series Reel 70 Is Part Of D8370-F Recipient Lowrey, Grosvenor Porter Uri https://edisondigital.rutgers.edu/document/D8370ZCU https://edisondigital.rutgers.edu/document/D8370ZCU --