Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6072863 | Apparatus for conditioning automatic coin validation signals, and method-of-use therefor | — | 2000-06-06 |
| 4587110 | Process of recovering copper and of optionally recovering silver and gold by a leaching of oxide- and sulfide-containing materials with water-soluble cyanides | Arthur Bergmann, Ulrich Haidlen | 1986-05-06 |
| 4231859 | Molybdenite flotation | Jerry L. Huiatt, Melvin D. Shurtz | 1980-11-04 |