Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4560453 | Efficient, safe method for decoppering copper refinery electrolyte | John S. Batzold | 1985-12-24 | $14,639,000 |
| 4519372 | Gas injection valve | — | 1985-05-28 |