Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7769192 | Speaker system with oscillation detection unit | Masayuki Takagi, Kosuke Takata | 2010-08-03 |
| 4403863 | Method for preparing concrete by use of multi-layer pan type mixer | Takeshi Fukushima, Kiyoshi Sakagami | 1983-09-13 |