Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854083 | Polishing machine using super abrasive grains | Toshio Togano | 1989-08-08 |
| 4844988 | Diamond composite and method for producing the same | Satoshi Hayakawa | 1989-07-04 |
| D301578 | Telephone handset | Yoshio Sasaki, Iwamasa Nishikado, Tsuneji Kimeda | 1989-06-13 |