Nikola Tesla U.S. Patent 725,605 - System of Signaling Patent Wrapper Page 55

23,847, 2. manner that the order of impulses is the essential thing to which the tuning is directed. The following claims are suggested under Rule 96 and applicant is required to make them by March 24, 1902, and in default he will be presumed to have disclaimed the invention defined therein. A telegraph system having in combination means for producing and transmitting two or more impulses of different periodicities to forin a signal in a predetermined order of succession, substantially as set forth. A 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. In a wireless telegraph system, the combination 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 order of succession, substantially as set forth. In a wireless telegraph system, the combination of means for generating a series of magnetic waves of different periodicities, a signal circuit and a circuit controller in said circuit, said controller being operated or controlled by a series of two or more magnetic waves, substantially as set .forth. In a wireless telegraph system, the combination of means for generating a series of electro-magnetic waves of different periodicities, receiving surfaces of correspondingly different electrical receptivities and a circuit controller arranged in a signal circuit and operative only by the conjoint action of all the voltages or currents generated by the waves from the sending station, substantially as set forth. In a wireless telegraph system, the combination of means for generating a series of magnetic waves of different periodicities, receiving surfaces of differing electrical receptivities and an indicating mechanism operative to give an intelligible indication only when currents are induced in the receiving surfaces in a predetermined order, substantially set forth. 669