Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6444176 | Apparatus for purification of water area | Katsutoshi YOSHINAGA | 2002-09-03 |
| 5478208 | Submersed jet pump method for generating a stream of water | Katutoshi Yoshinaga | 1995-12-26 |
| 5417550 | Submersed jet pump for generating a stream of water | Katutoshi Yoshinaga | 1995-05-23 |