Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846648 | Triple-wall foam coextrusion apparatus | Steven E. Spence, Robert F. Shamet, Flavio Da Silva | 1989-07-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846648 | Triple-wall foam coextrusion apparatus | Steven E. Spence, Robert F. Shamet, Flavio Da Silva | 1989-07-11 |