Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5649002 | Method and apparatus for detecting a telephone CPE alerting signal | David Zielski, William L. Nutter, Alexander Marra | 1997-07-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5649002 | Method and apparatus for detecting a telephone CPE alerting signal | David Zielski, William L. Nutter, Alexander Marra | 1997-07-15 |