Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7245559 | Acoustic fence | Larry R. McDonald | 2007-07-17 |
| 6813220 | Acoustic fence | Larry R. McDonald | 2004-11-02 |
| 5551574 | Method and apparatus for concentration of minerals by froth flotation | William L. Cornell | 1996-09-03 |
| 5467876 | Method and apparatus for concentration of minerals by froth flotation | William L. Cornell | 1995-11-21 |