Title: In the matter of the appeal of Edison & Harrington from the decision of the Commissioner of Patents of March 20, 1875, to the secretary of the Interior
Subjects: Trials, litigation, Telegraph, Patents, Duplex system, Quadruplex system, Patent suits
Places: United States
People: George B. Prescott (1830-1894), Thomas A. Edison (1847-1931), George Harrington (-1892)