Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5059061 | Truck mounted pavement marking applicator | Louis F. Keller | 1991-10-22 |
| 5047107 | Method and apparatus for applying a reflective sleeve to a traffic cone | Louis F. Keller, James P. McAuley | 1991-09-10 |
| 4623280 | Pavement marker applicator | — | 1986-11-18 |
| 4242173 | Pavement-marking tape application apparatus | — | 1980-12-30 |