Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5692343 | Surface layer ground establishment block, surface layer ground using the same and method for utilizing the same | Tadashi Matsuura, Masakazu Nagase, Kouichi Ushiroda, Sakae Ebata, Naoto Yoshida +2 more | 1997-12-02 |