Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5658521 | Foam sheet, method and apparatus for widening foam sheet | Ken Takahashi, Takeo Takahashi | 1997-08-19 |
| 5605709 | Foam sheet, method and apparatus for widening foam sheet | Ken Takahashi, Takeo Takahashi | 1997-02-25 |