Issued Patents 2019
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10487508 | Prefabricated offset shingle | Lawrence J. Grubka, William Edwin Smith, Bert W. Elliott, Mark Burger | 2019-11-26 |
| D867623 | Shingle | Lawrence J. Grubka, Rita Roberts | 2019-11-19 |
| 10358824 | Shingle sealing arrangements | David P. Aschenbeck, James E. Loftus, Donn R. Vermilion, Lawrence J. Grubka, Carmen Anthony LaTorre +8 more | 2019-07-23 |
| D843602 | Shingle | Lawrence J. Grubka, Rita Roberts | 2019-03-19 |
| D843603 | Shingle | Lawrence J. Grubka, Rita Roberts | 2019-03-19 |
| D843604 | Shingle | Lawrence J. Grubka, Rita Roberts | 2019-03-19 |