EH

Ernst F. Hark

📍 Conroe, TX: #10 of 27 inventorsTop 40%
🗺 Texas: #885 of 4,134 inventorsTop 25%
Overall (1989): #136,580 of 140,708Top 100%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4808287 Water purification process — 1989-02-28