Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5371972 | Method of improving the surface of steel pipe for corrosion resistant coating and apparatus for use in carrying out the method | Stephen E. McConkey | 1994-12-13 |
| 5311652 | Method of improving the surface of steel pipe for corrosion resistant coating | Stephen E. McConkey | 1994-05-17 |