Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D284662 | Hotel telephone faceplate | Robert H. McKenzie | 1986-07-15 |
| 4551832 | Telephone based control system | Richard T. Carll, Kurt von Nieda | 1985-11-05 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D284662 | Hotel telephone faceplate | Robert H. McKenzie | 1986-07-15 |
| 4551832 | Telephone based control system | Richard T. Carll, Kurt von Nieda | 1985-11-05 |