Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8066551 | Retaining ring with shaped surface | Hung Chih Chen, Steven M. Zuniga, Charles C. Garretson, Douglas R. McAllister, Jian Lin +12 more | 2011-11-29 |
| 7927190 | Retaining ring with shaped surface | Hung Chih Chen, Steven M. Zuniga, Charles C. Garretson, Douglas R. McAllister, Jian Lin +12 more | 2011-04-19 |