Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6720716 | Spark plug and method for manufacturing the same | Masamichi Shibata, Hiromi Hiramatsu | 2004-04-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6720716 | Spark plug and method for manufacturing the same | Masamichi Shibata, Hiromi Hiramatsu | 2004-04-13 |