Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8376245 | Snow making apparatus and method | Heldur R. Ratnik, Matthew A. Carson | 2013-02-19 |
| 7481091 | Material processing system | David F. Grant, Patrick B. Berbon, Paul A. Burkey | 2009-01-27 |
| 5884841 | Method and apparatus for making snow | H. Ronald Ratnik, Louis N. Rapp | 1999-03-23 |
| 5699961 | Fanless snow gun | H. Ronald Ratnik | 1997-12-23 |