Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5028176 | Glass drilling machine with cooling fluid back pressure control system | Kent A. Delventhal | 1991-07-02 |
| 4955763 | Glass drilling machine | Kent A. Delventhal | 1990-09-11 |