Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9636716 | Vacuum cleaning device | Atsushi Hirata, Yasuhiro Shigegaki, Tetsuya Hirata, Kazuo Miyoshi, Yoshiyasu Matsuda | 2017-05-02 |
| 9605330 | Vacuum heat treatment device | Kazuhiko Katsumata, Noboru KIYA, Noriaki Nagai | 2017-03-28 |
| 9555450 | Vacuum cleaning apparatus and vacuum cleaning method | Masatoshi MITSUZUKA, Hiroyuki Konishi | 2017-01-31 |