Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846101 | Apparatus for plasma treatment of small diameter tubes | Joel L. Williams | 1989-07-11 |
| 4822632 | Ionizing plasma lubricant method | Joel L. Williams, David Martin | 1989-04-18 |