Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876141 | Double layer pavement marking sheet material | Sadao Kobayashi, Katsuyuki Sato, Kouichi Ijichi | 1989-10-24 |
| 4824516 | Pavement-marking tape applicator | Akio Yamasaki | 1989-04-25 |