Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7963388 | Spline roller for a belt-driven roller conveyor, and method for making | John Erwin Treft | 2011-06-21 |
| 7882944 | Drive belt guard for a roller conveyor | John Erwin Treft | 2011-02-08 |