Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6791245 | Glow plug and spark plug, and manufacturing method therefor | Hiroaki Nasu, Wataru Matsutani, Chiaki Kumada | 2004-09-14 |
| 6699089 | Sheathed glow plug and method of manufacturing the same | — | 2004-03-02 |