Tesla patent drawings

Nikola Tesla Patents

Tesla was granted nearly 200 patents worldwide

JUJ JUN 15: 1912 OFFI U.S. Patent Office, JUN 17 1912 Division XVIII IN THE UNITED STATES PATENT OFFICE Div. 18, Room 325, In the matter of the application of Nikola Tesle, filed Jan. 17th, 1911, Serial No. 603049. Subject: Rotary Engines and Turbines. Sir:- Hon. Commissioner of Patents, #10 New York, N. Y., June 14th, 1912. Letter to Office. In the above application we received notice under date: of May 7th, 1912 that action would be suspended for thirty days in view of a probable interference. This period having elapsed we respectfully request that the interference be declared or the case passed to issue. Very respectfully, 61 14. Pag. Coope Altay ward Altzo zu Tulen. 915