Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5643795 | Apparatus for purifying contaminated air | Ken Hirate, Kazumi Kaneko, Kazunori Watagami | 1997-07-01 |
| 5599713 | Apparatus for purifying contaminated air | — | 1997-02-04 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5643795 | Apparatus for purifying contaminated air | Ken Hirate, Kazumi Kaneko, Kazunori Watagami | 1997-07-01 |
| 5599713 | Apparatus for purifying contaminated air | — | 1997-02-04 |