Url https://edisondigital.rutgers.edu/document/QD012E2214A Resource class dctype:Text Title [QD012E2214A], Letter from U.S. Patent Office. Commissioner to Thomas Alva Edison, December 8th, 1881 Creator U.S. Patent Office. Commissioner Subject Patent interference Carbon, coal, glass, ceramics Incandescent lamp Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1881-12-08 Type Letter Identifier QD012E2214A Source 47:931 Relation Freeman, Walter K Serrell, Lemuel Wright Rights Thomas Edison National Historical Park Date Created 1881-12-08 Has Version https://archive.org/details/edisonmicrofilm47/page/n941/mode/1up Archive.org Viewer, Microfilm Series Reel 47 Is Part Of QD012E-F Recipient Edison, Thomas Alva Uri https://edisondigital.rutgers.edu/document/QD012E2214A https://edisondigital.rutgers.edu/document/QD012E2214A --