Duane W. Player

EP Evans Products: 1 patents #5 of 17Top 30%

MC Minneapolis Electric Steel Castings: 1 patents #2 of 5Top 40%

📍 Salt Lake City, UT: #1,905 of 4,590 inventorsTop 45%

🗺 Utah: #7,921 of 19,430 inventorsTop 45%

Overall (All Time): #2,341,253 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4646980	Cone discharge for diaphragm discharge rotary grinding mill	Peter W. Leach	1987-03-03
4232834	Roll crusher	James A. Weil	1980-11-11