Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5598456 | Integrated telephone, intercom, security and control system for a multi-unit building | — | 1997-01-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5598456 | Integrated telephone, intercom, security and control system for a multi-unit building | — | 1997-01-28 |