Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871119 | Impact crushing machine | Hiroyuki Murata, Takeshi Tanaka, Chouji Hino, Masahiro Chiji | 1989-10-03 |
| 4834298 | Crushing method and apparatus | Hiroyuki Murata, Masahiro Chiji, Takeshi Tanaka, Tadao Kuwahara, Masamichi Cho | 1989-05-30 |