Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6498320 | Power supply apparatus for arc-utilizing apparatus | Haruo Moriguchi, Hideo Ishii | 2002-12-24 |
| 6469921 | Power supply apparatus | Toru Arai, Goro Nakano, Hideo Ishii | 2002-10-22 |