Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7862257 | Cable guide device for use in a manhole | Jin-Woo Han, Byong Soo Woo | 2011-01-04 |
| 7475865 | Cable pulling machine for use in removing underground cables | Jin-Woo Han, Hyoung Woo Kim, Yong-Kun Noh, Wang Kyu Kang, Byong Soo Woo | 2009-01-13 |