Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9705292 | Spark plug and method for producing the same | Daisuke Sumoyama, Tsutomu Shibata | 2017-07-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9705292 | Spark plug and method for producing the same | Daisuke Sumoyama, Tsutomu Shibata | 2017-07-11 |