Patents "Method and Apparatus for Coating Plates", filed September 1879, issued April 1880. "Photographic Film", filed May 10, 1884, issued October 14, 1884. "Photographic Film", filed March 7, 1884, issued October 14, 1884. (with William H. Walker) "Roll Holder for Photographic Films", filed August 1884, issued May 1885. "Camera", filed March 1888, issued September 1888. Eastman licensed, then purchased "Photographic Apparatus" (roll film holder), filed June 21, 1881, issued October 11, 1881, to David H. Houston.
patents "method and apparatus for coating plates" filed september 1879 issued april 1880 "photographic film" filed may 10 1884 issued october 14 1884 "photographic film" filed march 7 1884 issued october 14 1884 (with william h walker) "roll holder for photographic films" filed august 1884 issued may 1885 "camera" filed march 1888 issued september 1888 eastman licensed then purchased "photographic apparatus" (roll film holder) filed june 21 1881 issued october 11 1881 to david h houston