Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6447619 | High surface pressure resistant steel parts and methods of producing same | Takemori Takayama | 2002-09-10 |
| 6413328 | High surface pressure resistant steel parts and methods of producing same | Takemori Takayama | 2002-07-02 |