Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871605 | Inorganic fiber mat based bituminous sheet materials | Charles A. Pagen, George Stepien, Jr. | 1989-10-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871605 | Inorganic fiber mat based bituminous sheet materials | Charles A. Pagen, George Stepien, Jr. | 1989-10-03 |