Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4721588 | Closed circuit process for the production of expanded polystyrene foam | Edgar Burchard, Arturo Echeverria, Otto F. Plettner | 1988-01-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4721588 | Closed circuit process for the production of expanded polystyrene foam | Edgar Burchard, Arturo Echeverria, Otto F. Plettner | 1988-01-26 |