Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D332147 | Bay window | Hideo Hirabayashi, Yoshitsugu Utsumi | 1992-12-29 |
| D331468 | Bay window | Hideo Hirabayashi, Yoshitsugu Utsumi | 1992-12-01 |
| 5161593 | Shutter assembly for a bay window | Hideo Hirabayashi, Yoshitsugu Utsumi, Hirosaburou Mori | 1992-11-10 |