Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4654510 | PTC heating apparatus | Kazumasa Umeya, Ryoichi Shioi, Hisao Senzaki, Hisao Nakagawa, Shoji Koyama | 1987-03-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4654510 | PTC heating apparatus | Kazumasa Umeya, Ryoichi Shioi, Hisao Senzaki, Hisao Nakagawa, Shoji Koyama | 1987-03-31 |