Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5652415 | Molded article designed to absorb airborne sound | Helmut Pelzer, Hans-Peter Keller, Rolf Guenzel | 1997-07-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5652415 | Molded article designed to absorb airborne sound | Helmut Pelzer, Hans-Peter Keller, Rolf Guenzel | 1997-07-29 |