Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6417488 | Internal metal pipe welding apparatus and monitoring system | Yuko Takeuchi, Hitoshi Hayakawa | 2002-07-09 |
| 6334351 | Metal pipe expander | — | 2002-01-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6417488 | Internal metal pipe welding apparatus and monitoring system | Yuko Takeuchi, Hitoshi Hayakawa | 2002-07-09 |
| 6334351 | Metal pipe expander | — | 2002-01-01 |