Other Early Experimenters : Nikolaj Afanasievich (Dmitrievi) Teleshov
On October 19, 1867 a retired Russian artillery officer Nikolaj Teleshov receives (under an August 17, 1867 application), a patent for "Improved lighter-than-air system" for an air vehicle being a jet airplane of "Delta" type.
Nikolaj Teleshov's "Delta", 1867
So far ahead of its time, Teleshov failed to get patents for the craft in Russia, but was successful in France Despite the patents however, Teleshov failed to build the aircraft either in Russia or abroad
Nikolaj Teleshov in later life