Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7490872 | Corner piece-less duct, method of producing the same, and duct-forming machine | Toshio Yamamoto, Yoshimasa Yoshimoto, Shozo Iizuka, Takashi Hara | 2009-02-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7490872 | Corner piece-less duct, method of producing the same, and duct-forming machine | Toshio Yamamoto, Yoshimasa Yoshimoto, Shozo Iizuka, Takashi Hara | 2009-02-17 |