Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861189 | System for paving inclined and/or curved surfaces | Masayuki Yazawa, Kazumitsu Asai, Yoshiharu Okamoto, Kouhei Mio | 1989-08-29 |
| 4854769 | System for paving inclined and/or curved surfaces | Masayuki Yazawa, Kazumitsu Asai, Yoshiharu Okamoto, Kouhei Mio | 1989-08-08 |
| 4852278 | Method and apparatus for grading and measuring a surface having a curved profile | Seiichiro Takizawa, Masayuki Yazawa, Kazumitsu Asai, Yoshiharu Okamoto | 1989-08-01 |
| 4801219 | System for compacting paved surfaces | Masayuki Yazawa, Kazumitsu Asai, Yoshiharu Okamoto | 1989-01-31 |