Nikola Tesla U.S. Patent 514,169 - Reciprocating Engine Patent Wrapper Page 8

T } 1 1 1 J ommunications should be addrand to "The Lemmissioner of Patents. Webington, D. C." DEPARTMENT OF THE INTERIOR, Venited Plates Patent 140 5 1865 NOVS 1893 S. PATENT OFFICE. Qiashington, K.C., Nov. 3 Nikola Tesla. Duncan & Page. 120 Broadway, a , 1893. 483,5-63. New York City. As amended the 30th ultiins, there has been considered. case I's further support of the criticum made in the former office letter to the impossibility of developing such temperaturer in the air-spring stated by afflicent, see as by Dec. 21, 1890. at Reciprocating Engiver. Aug. 19,1893. as page 5 of. Confressed Air Production pamphlet William L. Saunders. Ct lecture delivered Sibley College, Cornell Kinnity), in whick it is stated that "the heat of 53