Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11421346 | Active cleaning vacuum system and method | Richard D. Webb, Brian M. Repman, Joel C. Stefl | 2022-08-23 |
| 11255024 | Seed lifting and rotating system for use in crystal growth | Joel C. Stefl | 2022-02-22 |