The Thomas A. Edison Papers Digital Edition

The following two lists provide a partial inventory of Edison's telegraph-related patent applications for the years 1871-1877. The lists include case numbers 31-148 and ten additional applications. The case numbers were assigned to the applications by Edison and his attorneys before they were sent to the Patent Office.

The first list, covering case numbers 31-120 and ten unnumbered items, appears as Defendants' Exhibit No.40 in the printed record of Atlantic and Pacific Telegraph Company v. George B. Prescott, Western Union Telegraph Company, Lemuel W. Serrell, and Thomas A. Edison—the so-called Quadruplex Case. (See Litigation Series.) This list gives dates of issue and patent numbers for the successful applications, along with the names of the individuals or companies to whom the applications were assigned.

The second list, covering case numbers 103-148, is printed on page 108 in the volume of testimony for Edison in the Telephone Interferences, Cases A through L and No. 1. (See Litigation Series.)