Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6598255 | Cleaning rotary brush | Masao Ide, Konomu Tokunaga | 2003-07-29 |
| 6502273 | Cleaning sponge roller | Koji Mihara, Masao Ide, Koei Igarashi, Konomu Tokunaga, Hiroshi Miyaji | 2003-01-07 |