Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4911975 | Polymer bitumen web | — | 1990-03-27 |
| 4731284 | Thermally bondable roofing material | Dieter Hailer | 1988-03-15 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4911975 | Polymer bitumen web | — | 1990-03-27 |
| 4731284 | Thermally bondable roofing material | Dieter Hailer | 1988-03-15 |