Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699835 | Multi-layer plastic hollow pipe | Yasuo Ezaki | 1997-12-23 |
| 5653265 | Hollow plastic product | Yasuo Ezaki | 1997-08-05 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699835 | Multi-layer plastic hollow pipe | Yasuo Ezaki | 1997-12-23 |
| 5653265 | Hollow plastic product | Yasuo Ezaki | 1997-08-05 |