Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5250230 | Composition and process for cleaning metals | Duane C. Steele | 1993-10-05 |
| 5242714 | Process for forming protective base coatings on metals | Duane C. Steele | 1993-09-07 |
| 4985116 | Three dimensional plating or etching process and masks therefor | John H. Mettler, William L. Johnson, Victor Zaderej | 1991-01-15 |