Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700992 | Zigzag heating device with downward directed connecting portions | Shinichi Mitani | 1997-12-23 |
| 5671323 | Zigzag heating device with downward directed connecting portions | Shinichi Mitani | 1997-09-23 |