Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6356624 | Method and apparatus for detecting and measuring foreign voltages | Richard Bruce Webb, Walter S. Schopfer | 2002-03-12 |
| 6351528 | Integrated ringer for short telephone lines | — | 2002-02-26 |