Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6428485 | Method for testing hearing ability by using internet and recording medium on which the method therefor is recorded | — | 2002-08-06 |
| 6086541 | Method for testing hearing ability by using ARS (automatic voice response system) run by a computer, a program therefor and a noise blocker | — | 2000-07-11 |