Nikola Tesla U.S. Patent 725,605 - System of Signaling Patent Wrapper Page 19

[ J Sub Intelitate Sb Speen. Rooma 91. Application of Nikola Tesla, Serial No. 23,847, Filed July 16, 1900, Systems of Signalling. Hon. Commissioner of Patents, same: New York, March 26, 1901. Sir:- In the matter of the application above named we hereby amend by cancelling the entire specification and claims, including the preamble, and substituting therefor the following amended specification: "To all whom it may concern:- Be it known that I, Nikola Tesla, a citizen of the United States, residing in the Borough of Manhattan, in the City, County and State of New York, have invented certain new and useful improvements in Systems of Signalling, of which the following is a specification, reference being had to the drawings accompanying and forming a part of the In certain systems for transmitting intelligible messages, or governing the movements and operations of distant automatons, electrical impulses or disturbances, produced by suitable apparatus, are conveyed through the natural media to a receiving circuit, capable of responding to the impulses and thereby effecting the control of other appliances. Generally a special device, highly sensitive, is connected to the receiving circuit which, in order to render it still more susceptible, and in order to reduce -1633