Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6695010 | Segmented ceramic choke | Jeffrey C. Robison, Stephen R. Chipman, Craig Smith | 2004-02-24 |
| 6685167 | Double-seated shutoff valve | Jeffrey C. Robison, Stephen R. Chipman, Craig Smith | 2004-02-03 |