Issued Patents 2020
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10851542 | Fire and water resistant, integrated wall and roof expansion joint seal system | Walter C. Jones, Bill Witherspoon | 2020-12-01 |
| 10794056 | Water and/or fire resistant expansion joint system | William Witherspoon | 2020-10-06 |
| 10787805 | Fire and/or water resistant expansion and seismic joint system | Bill Witherspoon | 2020-09-29 |
| 10787806 | Fire and/or water resistant expansion and seismic joint system | Bill Witherspoon | 2020-09-29 |
| 10570611 | Method of making a water resistant expansion joint system | Bill Witherspoon | 2020-02-25 |
| 10544582 | Expansion joint system | William Witherspoon | 2020-01-28 |