Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6261979 | Filter medium and air filter unit using the same | Osamu Tanaka, Toshio Kusumi, Yoshiyuki Shibuya | 2001-07-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6261979 | Filter medium and air filter unit using the same | Osamu Tanaka, Toshio Kusumi, Yoshiyuki Shibuya | 2001-07-17 |