Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673923 | Split seal ring made of synthetic resin having crossed diverging ends | Tsutomu Watanabe | 1997-10-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673923 | Split seal ring made of synthetic resin having crossed diverging ends | Tsutomu Watanabe | 1997-10-07 |