Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6434816 | Method of attaching a plug cap to a spark plug | Takao Yamamoto, Masanori Shimazoe | 2002-08-20 |
| 6406306 | Plug cap for attachment to a spark plug | Takao Yamamoto, Masanori Shimazoe | 2002-06-18 |