Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6671360 | Intercom system for a building or apartment house | Hiroshi Sumiya, Tatsuru Shinozaki | 2003-12-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6671360 | Intercom system for a building or apartment house | Hiroshi Sumiya, Tatsuru Shinozaki | 2003-12-30 |