Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4786186 | Stirrer for use in liquid storage tanks, and a method for determining its position in the tank | Katsuji Okumura, Hiroshi Maeda | 1988-11-22 |
| 4746221 | Stirrer for use in liquid storage tanks | Katsuji Okumura, Hiroshi Maeda | 1988-05-24 |