YD

Yevgeniy Fedorovich Drachko

Overall (All Time): #1,515,246 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
8950377 Hybrid internal combustion engine (variants thereof) — 2015-02-10
8511277 “Turbomotor” rotary machine with volumetric expansion and variants thereof — 2013-08-20
8210151 Volume expansion rotary piston machine — 2012-07-03