Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4560453 | Efficient, safe method for decoppering copper refinery electrolyte | John S. Batzold | 1985-12-24 |
| 4519372 | Gas injection valve | — | 1985-05-28 |
JH
James E. Hoffman
Overall (All Time): #2,353,399 of 4,157,543Top 60%
2
Patents All Time