Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9867022 | Emergency services dual tone multi frequency (DTMF) function | George Edward L. Schaefer, Jr., Steven A. Millstein | 2018-01-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9867022 | Emergency services dual tone multi frequency (DTMF) function | George Edward L. Schaefer, Jr., Steven A. Millstein | 2018-01-09 |