JE

J. Richard England

📍 Azilda, CA: #11 of 90 inventorsTop 15%
Overall (All Time): #1,289,694 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5485888 Spherical reaming bit 1996-01-23
5413183 Spherical reaming bit 1995-05-09
5388653 Directional drilling apparatus 1995-02-14
5320188 Underground mining system 1994-06-14