Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D406543 | Traffic channelizer | Gregory H. Brown, David E. Cowan | 1999-03-09 |
| 5865427 | Plastic fencing with reflective tape | — | 1999-02-02 |
| 5421668 | Tread ballast or weight for temporary traffic control devices and posts | David E. Cowan | 1995-06-06 |
| 5234280 | Traffic channeling devices | — | 1993-08-10 |
| D289848 | Condiment grinding device | — | 1987-05-19 |
| 4387551 | Heat-sealable, ovenable containers and method of manufacture | — | 1983-06-14 |
| D268637 | Condiment mill | — | 1983-04-19 |
| D259089 | Pepper mill | — | 1981-05-05 |
| D259090 | Combined salt and pepper mill | — | 1981-05-05 |
| 4261504 | Heat-sealable, ovenable containers | — | 1981-04-14 |