Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4558541 | Ice skate sharpening method | — | 1985-12-17 |
| 4534134 | Ice skate sharpening machine | Douglas R. Meier | 1985-08-13 |
| 4235050 | Skate sharpening apparatus | James H. Hannaford, Warren L. Myrfield, David H. Weiler, Frederick N. Trofimenkoff, Donald M. Dobie | 1980-11-25 |