Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6185294 | Method and apparatus for installing telephone intercom-voice messaging apparatus at doorbell for dwelling | O. Joseph Chornenky, John C. Stuart | 2001-02-06 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6185294 | Method and apparatus for installing telephone intercom-voice messaging apparatus at doorbell for dwelling | O. Joseph Chornenky, John C. Stuart | 2001-02-06 |