Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859531 | Method for bonding a cubic boron nitride sintered compact | Kazuwo Tsuji, Yoshiaki Kumazawa, Nobuo Urakawa, Keiichi Satoh | 1989-08-22 |
| 4845824 | Clip-clinching device for a coil-spring unit of a mattress | Fujio Ishikawa, Motonobu Oyabu, Hideyuki Fukuda | 1989-07-11 |