Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D305672 | Advertising display unit for merchandising cooler | Robert A. Johnson | 1990-01-23 |
| 4738042 | Integral moving message device for merchandising display case | Robert A. Johnson, Joseph G. Correia, Dan G. Hopkins | 1988-04-19 |