Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6487282 | Apparatus and method for an inbound telemetry device to sense telephone line status | Joshua Zhu | 2002-11-26 |
| 6445142 | Apparatus and method for remotely detecting a magnetic ballast | Yin Zhang | 2002-09-03 |
| 6347135 | Apparatus and method for powering a telephone-based inbound telemetry device | Joshua Zhu | 2002-02-12 |