Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9793687 | Spark plug for internal combustion engine, having an annular ground electrode facing an outer circumference of a center electrode | Masataka Deguchi, Masamichi Shibata, Kanechiyo Terada, Tetsuya Miwa, Yuuki Tsukamoto | 2017-10-17 |