Patent of Invention № 2209324 RIC Engine mode of operation

Patent of Invention № 2215210 Stiffness Compensator

Patent of Invention № 2215266 Centrifugal flow meter gauge

Patent of Invention № 2228280 Vessel liftslab stiffening             

Patent of Invention № 2231659 Turbocharged RIC Engine            

Patent of Invention № 2256112 Crank mechanism

Patent of Invention № 2361094 Exhaust gas Scrubbing system in RIC engines

Patent of Invention № 2386568 Variable-pitch-propeller

Patent of Invention № 2479729 Marine exhaust muffler

Patent of Invention № 2215210 Vibration dampener with Electromagnetic Stiffness Compensator