Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4306147 | Reflection-type photoelectric switching apparatus | Toshifumi Fukuyama | 1981-12-15 |
| 4211923 | Fluid tight ultrasonically welded photoelectric device | Toshifumi Fukuyama | 1980-07-08 |