| 7894578 |
E911 location services for users of text device relay services |
— |
2011-02-22 |
| 7573985 |
Systems and methods for facilitating communications involving hearing-impaired parties |
Steven C. Johnson, Mark R. Logan, Chris R. Heidelbauer, Benjamin W. Dudley, Kurt P. Haldeman |
2009-08-11 |
| 7315612 |
Systems and methods for facilitating communications involving hearing-impaired parties |
— |
2008-01-01 |
| 7236574 |
Method and system for providing communication services for hearing-impaired parties |
Kurt P. Haldeman, Benjamin W. Dudley |
2007-06-26 |
| 7200208 |
Method and system for providing communication services for hearing-impaired parties |
James O. Smith, Jr., Chris R. Heidelbauer |
2007-04-03 |
| 7142642 |
Systems and methods for facilitating communications involving hearing-impaired parties |
Steven C. Johnson, Mark R. Logan, Ivaylo Ivanov, Benjamin W. Dudley, Kurt P. Haldeman +1 more |
2006-11-28 |