Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5295507 | Containment valve that allows contamination free transfer | Roy Howard Byerly, Robert T. Spoonmore | 1994-03-22 |
| 5150735 | Containment valve that allows contamination free transfer | Roy Howard Byerly, Robert T. Spoonmore | 1992-09-29 |