Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5676004 | Method of detecting bender operating time | Shigeharu Matsumoto, Nobuo Sakurai | 1997-10-14 |
| 5615568 | Apparatus and method of detecting bender operating time | Shigeharu Matsumoto, Nobuo Sakurai | 1997-04-01 |