Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6766829 | Valve assembly for gas cylinder | Osamu Hirakami, Shinji Maekawa | 2004-07-27 |
| 6691729 | Valve assembly | Mitsunori Sakai, Junichi Ono, Yorikazu Satoh, Ken Nagasawa | 2004-02-17 |