Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6255618 | Method and apparatus for spot welding a work having a plurality of welding materials placed on top of each other by boring a hole to release vapors | Toshiya Shintani, Yohsuke IMAI, Yoshitaka Niigaki, Iwao Kurokawa, Hideto Uematsu | 2001-07-03 |