Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5172681 | Reciprocating point rotary diamond trueing and dressing tool and method of use | Robert L. Henry | 1992-12-22 |
| 5146909 | Stationary fine point diamond trueing and dressing block and method of use | Robert L. Henry | 1992-09-15 |
| 4915089 | Tool for trueing and dressing a grinding wheel and method of use | Joseph A. Zahorchak, Glenn Alfred Johnson | 1990-04-10 |