Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8322113 | Thermoplastic roofing system | Hal Steven Shapiro, Timothy J. Olehowski, Brian G Shamas | 2012-12-04 |
| 5932287 | Manufacture of built-up roofing products with moisture conditioned fibrous mats | Theodore W. Michelsen, Byron James Lemonier, Gary Allen Lundholm | 1999-08-03 |