Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8069879 | Hydrocarbon application hose | Joseph Varkey, Willem Wijnberg, Sheng Chang | 2011-12-06 |
| 7915532 | Enhanced electrical seismic land cable | Joseph Varkey, Byong Un Kim, Jushik Yun, Willem Wijnberg | 2011-03-29 |