Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6940974 | Systems and methods for generating tones for operating telephones | Clifford J. August, Thomas Heinrich Sternberg | 2005-09-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6940974 | Systems and methods for generating tones for operating telephones | Clifford J. August, Thomas Heinrich Sternberg | 2005-09-06 |