Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4998384 | Grinding wheel mounting means | Robert E. Cummings, Paul W. Kalinowski, Charles W. Sudol | 1991-03-12 |
| 4910924 | Composite grinding wheel | Robert L. Holden, Charles W. Sudol, Brian E. Swanson | 1990-03-27 |
| 4907376 | Plate mounted grinding wheel | Charles W. Sudol, Keith E. Wing, Sr. | 1990-03-13 |