Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7198062 | Fluid control valve | Herbert L. Hoffman, Pat Parkin, Frederick R. Helms, Roy Hai-Tien Loh, Yeu-Chuan Hsia +9 more | 2007-04-03 |
| 6682413 | Fluid control valve | Herbert L. Hoffman, Pat Parkin, Frederick R. Helms, Roy Hai-Tien Loh, Yeu-Chuan Hsia +5 more | 2004-01-27 |