Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4424953 | Dual-layer sintered valve seat ring | Yoshiaki Takagi, Takeshi Sugawara, Takayuki Matsuda | 1984-01-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4424953 | Dual-layer sintered valve seat ring | Yoshiaki Takagi, Takeshi Sugawara, Takayuki Matsuda | 1984-01-10 |