Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4775511 | Method of sulfide tarnish inhibiting of silver-copper, silver-gold and silver-copper-gold alloys | John Nielsen | 1988-10-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4775511 | Method of sulfide tarnish inhibiting of silver-copper, silver-gold and silver-copper-gold alloys | John Nielsen | 1988-10-04 |