Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6812837 | Automatic door sensor and automatic door system equipped with this sensor | — | 2004-11-02 |
| 6782660 | Automatic door sensor | Yasuhiro Takada | 2004-08-31 |
| 6730902 | Light beam sensor | Takashi Imai | 2004-05-04 |