Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9499988 | Shingle inserts and method for eliminating and preventing growth of algae, moss, or lichens on a roof | David Spencer, Mark Edgson | 2016-11-22 |
| 9103124 | Shingle inserts and method for eliminating and preventing growth of algae, moss, or lichens on a roof | David Spencer, Mark Edgson | 2015-08-11 |