Nikola Tesla U.S. Patent 645,576 - System of Transmission of Electrical Energy Patent Wrapper Page 21

Room No.91....Dict. communications should be cddressed to "The Commissioner of Patanis, Washington, D. C." Nikola Tesla, DEPARTMENT OF THE INTERIOR, 2-07 a c/o Kerr, Curtis & Page, 120 Broadway, UNITED STATES PATENT OFFICE, New York. Any commculation respecting this application should give the serial number. date of dling, and title of lavention. WASHINGTON, D. C., Nov. 6, 1897. ATENT OFFICE NOV 6 1897 MAILED DIV. Please find below a communication from the EXAMINER in charge of your application for System of Transmission of Electrical Energy: filed Sept. 2, 1897; Ser.No. 650, 343. Buy Butterworth Commissioner of Patents. The subject matter of this application is not yet clear. Applicant makes a point of the fact that the electricity in his invention is conveyed through the atmosphere by conduction as distinguished from induction. His claims both depend on this feature for their novelty. Yet it has not been made plain that the facts are as stated. First of all the applicant refers to the elevation at which he uses his terminals as if this were a feature of the invention by reason of the fact that the air is more rarePied higher up than it is at the sea level. The Examiner is inclined to think that such referen co has been made inadvertently and without due consideration. lf applicant's terminals are placed 139