Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5390246 | Portable multimedia marketing system | Douglas M. Brown | 1995-02-14 |
| D351499 | Case for a multimedia marketing system | Douglas M. Brown | 1994-10-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5390246 | Portable multimedia marketing system | Douglas M. Brown | 1995-02-14 |
| D351499 | Case for a multimedia marketing system | Douglas M. Brown | 1994-10-18 |