Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6426919 | Portable and hand-held device for making humanly audible sounds responsive to the detecting of ultrasonic sounds | — | 2002-07-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6426919 | Portable and hand-held device for making humanly audible sounds responsive to the detecting of ultrasonic sounds | — | 2002-07-30 |