Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10036476 | Opening and closing valve | Ryohei Yamamoto, Naoyuki Yamamoto | 2018-07-31 |
| D812194 | Oil extractor for automobiles | Ryohei Yamamoto, Naoyuki Yamamoto | 2018-03-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10036476 | Opening and closing valve | Ryohei Yamamoto, Naoyuki Yamamoto | 2018-07-31 |
| D812194 | Oil extractor for automobiles | Ryohei Yamamoto, Naoyuki Yamamoto | 2018-03-06 |