Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5327738 | Method of forming and maintaining artificial snow layer | Koji Morioka | 1994-07-12 |
| 5241830 | Method of forming and maintaining artificial snow layer | Koji Morioka | 1993-09-07 |