Frank D. Bergstein

📍 Cincinnati, OH: #1,932 of 8,043 inventorsTop 25%

🗺 Ohio: #15,837 of 73,341 inventorsTop 25%

Overall (All Time): #1,051,151 of 4,157,543Top 30%

Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #	Title	Co-Inventors	Date
5947678	Water wheel with cylindrical blades	—	1999-09-07
5333996	Dual fluid rotor apparatus	—	1994-08-02
5246342	Wind rotor apparatus	—	1993-09-21
5088884	Rotor assembly for fluid driven engine	—	1992-02-18
4960363	Fluid flow driven engine	—	1990-10-02