Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666287 | Quench-hardening testing method and apparatus | Masayuki Kobayashi | 1997-09-09 |
| 5658666 | Rolling bearing | Tsutomu Abe | 1997-08-19 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666287 | Quench-hardening testing method and apparatus | Masayuki Kobayashi | 1997-09-09 |
| 5658666 | Rolling bearing | Tsutomu Abe | 1997-08-19 |