Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6781476 | Filter having directional coupler and communication device | Kikuo Tsunoda, Hiromitsu Ito | 2004-08-24 |
| 6712586 | Gas suction pump device, gas feed adapter and gas alarm unit | Junichi Koyano, Shuji Tajima, Takuo Aida | 2004-03-30 |