Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4575409 | Apparatus for electrolyzing metal sheet | Lawrence C. Grambo, John E. Walls | 1986-03-11 |
| 4416972 | Electrolytic graining of aluminum with nitric and boric acids | John E. Walls, Thomas A. Dunder | 1983-11-22 |
| 4336113 | Electrolytic graining of aluminum with hydrogen peroxide and nitric or hydrochloric acid | John E. Walls, Thomas A. Dunder | 1982-06-22 |