Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4551946 | Door swinging device for automatically swinging doors | Kei Yoshida | 1985-11-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4551946 | Door swinging device for automatically swinging doors | Kei Yoshida | 1985-11-12 |