Nikola Tesla U.S. Patent 723,188 - Method of Signaling Patent Wrapper Page 17

574 64,522, 2. Further detailed explanation is asked. Eson of the claims is rejected upon the British petent to Vilson 30,846 of 1897, Telegraphy, Circuits and Systems, and upon the patent to Cardwell, 315,121, Apl. 7, 1885, Telegraphy, Reed. GC. Klean b. L.E. Examiner, Mr. 16.