Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4348711 | Method and apparatus for implanting a charge in an electret foil | Michael O'Sullivan | 1982-09-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4348711 | Method and apparatus for implanting a charge in an electret foil | Michael O'Sullivan | 1982-09-07 |