Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4785579 | Circular door operating method and apparatus | Kiyoaki Sugiyama, Keizo Fujii | 1988-11-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4785579 | Circular door operating method and apparatus | Kiyoaki Sugiyama, Keizo Fujii | 1988-11-22 |