Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5590855 | Train detection device for railroad models and train crossing control apparatus utilizing the train detection device | Ryochi Kato, Umeko Kato, Tomohiko Kato, Hideto Kato | 1997-01-07 |