Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4399333 | Telephone fault detection system | Raymond Z. A. Elia | 1983-08-16 |
| 4317967 | Fault isolation device | Paul Alexander De Vries, Roald G. Heyman | 1982-03-02 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4399333 | Telephone fault detection system | Raymond Z. A. Elia | 1983-08-16 |
| 4317967 | Fault isolation device | Paul Alexander De Vries, Roald G. Heyman | 1982-03-02 |