TTY
| Date | Clue |
|---|---|
| 2019-06-09 | Communication syst. for the deaf |
| 2017-09-16 | Communication device for the deaf: Abbr. |
| 2011-05-22 | Communication syst. for the deaf |
| 2007-01-31 | Communications syst. for the deaf |
| Date | Clue |
|---|---|
| 2019-06-09 | Communication syst. for the deaf |
| 2017-09-16 | Communication device for the deaf: Abbr. |
| 2011-05-22 | Communication syst. for the deaf |
| 2007-01-31 | Communications syst. for the deaf |