Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5193997 | Apparatus for preheating granular material | Isao Hashimoto, Jun Tatebayashi | 1993-03-16 |
| 4691788 | Lateral hole boring method and apparatus | Shoji Yoshida, Yasuhiko Haru, Etsuji Kosaka, Toshimichi Ikeda, Takeo Iida | 1987-09-08 |