Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6540196 | Break away support structure coupling | — | 2003-04-01 |
| 6467747 | Breakaway signpost | — | 2002-10-22 |
| 5732516 | Sign support anchor | — | 1998-03-31 |
| 4912865 | Multi-axis pivoting display sign | Richard N. Philippi, James E. Ahrens | 1990-04-03 |