Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7101046 | Kaleidoscope and image material assembly for kaleidoscope | Keiji Hattori | 2006-09-05 |
| 5396039 | Process for assembling piping or components by TIG welding | Henri Chevrel, Hideki Takagi, Eiichi Ozawa, Jean-Marie Friedt | 1995-03-07 |