Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5706342 | Method and apparatus for off-hook detection | Richard Ciosek | 1998-01-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5706342 | Method and apparatus for off-hook detection | Richard Ciosek | 1998-01-06 |