Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4351705 | Refining copper-bearing material contaminated with nickel, antimony and/or tin | by Margaret Ernst, executrix, William R. Opie, Harold P. Rajcevic, Peter D. Parker | 1982-09-28 |