Tesla patent drawings

Nikola Tesla Patents

Tesla was granted nearly 200 patents worldwide

S ) T U.S. Patent Office, NOV 27 1912 Division XVIII In the United States Patent Office. Division 18, Room 325. In the Metter of the Application of Nikola Tesla, filed January 17, 1911, Serial No. 603,049, for Rotary Engines and Turbines. Hon. Commissioner of Patents. Sir: - Letter to Office. New York, November 25th, 1912. 67 #14 In Office letter of October 14th, we were notified that priority of invention had been awarded to Mr. Tesla, in the . interference in which the above application was involved, and that the limit of appeal was set for November 14th. The time having nowexpired red we request that action be taken in the case. Respectfully, Kun lap Cospu Mayward atteps fr Zesta. 921