Nikola Tesla U.S. Patent 725,605 - System of Signaling Patent Wrapper Page 57

T T 1 1 1 I B Room al. Application of Nikola Tesla, Serial No. 23,847, filed July 16, 1900. For Systems of Signalling. Hon. Commissioner of Patents, Sir:- being". Cancelle per Rub Spec. 13. Mch sq. New York, March 21st, 1.902. We amend the above entitled application as follows: Clain 5, line 6, before "tuned" insert "each said circuit Claim 8, line 4, erase "tuned"to" and insert before "circuits" "tuned". Line 5, change "respond" to "responding". Insert the following claims: "10. A telegraph system having in combination means for producing and transmitting two or more impulses of different periodicities to form a signal in a predetermined order of succession, substantially as set forth. 11. -1A telegraph system having in combination, means for producing and transmitting two or more impulses of different periodicities in a predetermined order of succession, and a series of two or more impulse controlled devices conjointly operative to produce an indication, substantially as set forth. 12. In a wireless telegraph system, the comidination of a series of two or more discharge or generating surfaces differing in their electrical constants, two or more induction apparatus connected to said surfaces and two or more circuit controllers arranged in the circuit of the primary coils of the induction apparatus, and constructed to be operated in a predetermined 671