Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5355351 | Underwater low-frequency sound producer using a rare earth alloy | Akiyoshi Kawamori, Hiroshi Kamata, Iwao Nakano, Toshio Tsuchiya, Yasutaka Amitani | 1994-10-11 |
| 5323561 | Blasting apparatus using mixture gas and powder | Shigeo Kobayashi | 1994-06-28 |