Nikola Tesla U.S. Patent 725,605 - System of Signaling Patent Wrapper Page 54

668 RULE 78. In ovory ainondmont tho oxnot word or words to bo strickon ont or insortod in the application must bo spociflod and the prociso point indicated where tho arusare or insortion is to be ninde. All such amondiments of papor separato from the papers previously filod, and written on but ono sido of the paper. be on shouts must Room No..91... All communications should be addressed to "The Commissioner of Patents, Washington, D. C." Nikola Tesla, 2-¹6. DEPARTMENT OF TE INTERIOR, UNITED STATES Care, Kerr, Fage & Cooper, 120 Broadway, New York, N.Y. 23,517 All coinmunications respecting this application should give the serial number, date of filing, and title of invention. TENT OFFICE, WASHINGTON, D. C., 8 Letter March 15, 1902. Please find below a communication from the EXAMINER in charge of your application. filed July 16, 1900, Ser. No. 23,847, for Systems of Signaling. Fr. I. Allen. Commissioner of Patents. Upon a review of this case prior to declaring an interference several inaccuracies and insufficiencies have been discovered. Applicant is required to eliminate from the specification the statement that privacy can be secured in the apparatus of this application. The statement that messages cannot be interferred with and that the receivers will be each selective to the exclusion of any other is fully warranted but there is no warrant for any statement to the effect that the messages cannot be intercepted. It is obvious that an adjacent receiver capable of responding to a single frequency can be arranged to pick up one element or frequency of a signal by simply varying the inductance and capacity through whatever range necessary to strike one of the frequencies in use. In other words, applicant has a thoroughly operative selective system but not a privacy system. In claim 5, line 6, before "tuned" should be inserted each said circuit being. Claim 8 is slightly inaccurate in that it seems to specify a receiving apparatus comprising circuits tuned in such a