Url https://edisondigital.rutgers.edu/document/QP034AAI Resource class dctype:Text Title [QP034AAI], Letter from Frank Lewis Dyer to American Graphophone Co, May 11th, 1904 Creator Dyer, Frank Lewis Subject Competition and market structure Patent infringement Cylinder record and duplicating technology Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1904-05-11 Type Letter Identifier QP034AAI Source 225:704 Relation Columbia Phonograph Co National Phonograph Co Rights Thomas Edison National Historical Park Date Created 1904-05-11 Has Version https://archive.org/details/edisonmicrofilm225/page/n714/mode/1up Archive.org Viewer, Microfilm Series Reel 225 Is Part Of QP034-F Recipient American Graphophone Co Uri https://edisondigital.rutgers.edu/document/QP034AAI https://edisondigital.rutgers.edu/document/QP034AAI --