Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4188506 | Method and installation for masked speech transmission over a telephone channel | Pierre Schmid, Eduard Brunner | 1980-02-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4188506 | Method and installation for masked speech transmission over a telephone channel | Pierre Schmid, Eduard Brunner | 1980-02-12 |