Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861157 | Apparatus for continuously photographing road surface | Masanori Ohama | 1989-08-29 |
| 4796998 | Method for mobile survey of road surface | Noritsugu Watanabe, Wataru Taniguro | 1989-01-10 |