Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4292766 | Method and apparatus for grinding a workpiece | Calvin K. Kirk, Francis L. Messier | 1981-10-06 |
| 4201016 | Apparatus for grinding a workpiece | Calvin K. Kirk, Francis L. Messier | 1980-05-06 |