Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5166005 | Pattern for castings and the castings produced therefrom | Tadaomi Hirotsu | 1992-11-24 |
| 5070929 | Pattern for castings and the castings produced therefrom | Tadaomi Hirotsu | 1991-12-10 |