Issued Patents 2016
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9482007 | Flexible laminated hip and ridge shingle | Lawrence J. Grubka, James E. Loftus, Donn R. Vermilion, Jason D. Guerra | 2016-11-01 |
| D755997 | Shingle | Lawrence J. Grubka | 2016-05-10 |
| 9290943 | Hip and ridge roofing shingle | Lawrence J. Grubka, Hyun Gun Yu, Hun Joo Song | 2016-03-22 |