Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10501900 | Portable sign for a traffic control device | Richard F. Johnson | 2019-12-10 |
| 10487975 | Rotational coupling device | — | 2019-11-26 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10501900 | Portable sign for a traffic control device | Richard F. Johnson | 2019-12-10 |
| 10487975 | Rotational coupling device | — | 2019-11-26 |