Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5294271 | Heat treatment for manufacturing spring steel excellent in high-temperature relaxation resistance | Tomoyoshi Iwao, Teruo Tanaka, Toshiro Yamada | 1994-03-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5294271 | Heat treatment for manufacturing spring steel excellent in high-temperature relaxation resistance | Tomoyoshi Iwao, Teruo Tanaka, Toshiro Yamada | 1994-03-15 |