Issued Patents 2016
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9404637 | Color shift sign | Ellen O. Aeling, Michael A. Meis, John T. Simpson, Paul E. Humpal | 2016-08-02 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9404637 | Color shift sign | Ellen O. Aeling, Michael A. Meis, John T. Simpson, Paul E. Humpal | 2016-08-02 |