Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882525 | Method for controlling the working frequency of an electro-acoustic vibrating device | Eric Cordemans de Meulenaer | 1989-11-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882525 | Method for controlling the working frequency of an electro-acoustic vibrating device | Eric Cordemans de Meulenaer | 1989-11-21 |