Quadruplex system

Telegraphic connections: embracing recent methods in quadruplex telegraphy.

By Charles Thom and Willis H. Jones.

In the matter of U.S. patent, no. 162,633, issued April 27, 1875, to Thomas A. Edison and George Harrington, assignees of said Edison, and application no. 99, for U.S. letters patent, dated August 19, 1874, assigned by Thomas A. Edison to himself and George B. Prescott

United States. Patent Office

Statement and brief of Z.F. Wilber, accompanied by critical and explanatory notes by George B. Prescott, and documentary evidence in support of the same

George B. Prescott

Duplex and quadruplex telegraphy: parts 1-2

Donald M. McNicol

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

George B. Prescott

Statements of George B. Prescott, Frank L. Pope, Edward E. Quimby and George M. Phelps, Jr., in behalf of Mr. Prescott

George B. Prescott

Letters of George B. Prescott to the commissioner of patents, in reference to the inventions conveyed by the assignment of Thomas A. Edison for duplex and quadruplex telegraphy

George B. Prescott

Brief of George B. Prescott

George B. Prescott

The Atlantic and Pacific Telegraph Company against George B. Prescott and others: argument of E.N. Dickerson, Esq.

E. N. Dickerson

Atlantic and Pacific Telegraph Company vs. George B. Prescott, et al: brief for plaintiffs

by Benj. F. Butler