Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6642471 | Method for the projection welding of high-carbon steels and high-tension low-alloy steels | Kaneyuki Imai | 2003-11-04 |
| 6595558 | High-pressure metal pipe with connection head, method of forming the head and connection washer for the connection head | — | 2003-07-22 |