Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866703 | Integrated services digital network module | James B. Black, Mauro Cordani, Mike Gilbert, Tom Perry, Arthur L. Walsh +3 more | 1989-09-12 |
| 4845499 | Method for generating PCM logarithmic values from linear values | — | 1989-07-04 |
| 4831618 | Additive PCM speaker circuit for a time shared | — | 1989-05-16 |