Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D293317 | Digital telephone and data exchange equipment cabinet | Mitsuhiro Umezu, Tooru Nakajima, Mamoru Miyazaki | 1987-12-22 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D293317 | Digital telephone and data exchange equipment cabinet | Mitsuhiro Umezu, Tooru Nakajima, Mamoru Miyazaki | 1987-12-22 |