Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6732673 | Drivable post and marker | Robert K. Hughes, Jr. | 2004-05-11 |
| 6604485 | Drivable post and marker | Robert K. Hughes, Jr. | 2003-08-12 |
| 6109820 | Anchor base for flexible marker | — | 2000-08-29 |
| 5454665 | Artificial reef | — | 1995-10-03 |
| 5452965 | Replaceable flexible marker | — | 1995-09-26 |
| 5197819 | Mounting base for highway markers | — | 1993-03-30 |
| 4903465 | Mower guard for flexible markers | — | 1990-02-27 |