Nikola Tesla U.S. Patent 723,188 - Method of Signaling Patent Wrapper Page 37

594 C. Laruelles pertubster. Room 91. Application of Nikola Tesla, Serial No. 64,5te, filed June 14, 1901. Kethods of Signalling. Hon. Commissioner of Patents, Sir: - 64522 - 0 ✓ 24 مشار 1902 New York, March 21st, 1902. -1.- 81 We amend the above entitled application as follows: Claim 4, line 4, change "omission" to "enission". Insert the following claims: ✓ "5. In a telegraph system adapted or designed for the transmission of electrical signalling waves or impulses of different periodicities, and the receipt thereof, audible or recorded, the method of operation herein described which consists in varying the order of transmittal of waves or im pulses forming elements of the signal sent according as one or another station is to be signalled where (proper circuit clcsing mechanism being provided at each receiving station) the transmitted signal will be intelligible at and only at the intended receiving station, substantially as set forth. 6. A method of telegraphy, which consists in selecting and associating together in predetermined order of succession two or more electrically generated impulses of different periodicity forming elements of the signal sent and transmitting such selected impulses with reference to the conjoint action of both or all in the production of an audible or visible signal at a distant point, substantially as set forth. 7. In a system of telegraphy, wherein messages are sent by theuse of a plurality of electrically generated impulses of