Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8192240 | Contra-rotating propeller supported on rudder horn of ship | Soon Ho Choi, Hee Sang Cho, Se-Myun Oh | 2012-06-05 |
SR
Seong Sun Rhyu
Overall (All Time): #3,209,850 of 4,157,543Top 80%
1
Patents All Time