| 5915210 |
Method and system for providing multicarrier simulcast transmission |
Dennis W. Cameron, Walter C. Roehr, Jr., Masood Garahi, William D. Hays, David W. Ackerman |
1999-06-22 |
| 5754946 |
Nationwide communication system |
Dennis W. Cameron, Walter C. Roehr, Jr., Rade Petrovic, Masood Garahi, William D. Hays +1 more |
1998-05-19 |
| 5651050 |
Ground-to-air telephone calling system and related method for establishing a telephone link between a ground-based caller and a passenger on board an aircraft |
William D. Hays, Ernest A. Oswalt |
1997-07-22 |
| 5634198 |
Nationwide communication system |
Dennis W. Cameron, Walter C. Roehr, Jr., Masood Garahi, William D. Hays, David W. Ackerman |
1997-05-27 |
| 5590403 |
Method and system for efficiently providing two way communication between a central network and mobile unit |
Dennis W. Cameron, Walter C. Roehr, Jr., Rade Petrovic, Masood Garahi, William D. Hays +1 more |
1996-12-31 |
| 5581804 |
Nationwide communication system |
Dennis W. Cameron, Walter C. Roehr, Jr., Rade Petrovic, Masood Garahi, William D. Hays +1 more |
1996-12-03 |
| 5559862 |
Mobile paging telephone call back system and method |
Ernest A. Oswalt, William D. Hays |
1996-09-24 |
| 5438610 |
Method for establishing a communication link between a ground-base caller and a passenger on board an aircraft |
William D. Hays, Ernest A. Oswalt |
1995-08-01 |
| 5414750 |
Automated seamless cellular telephone network |
David W. Ackerman, Ernest A. Oswalt, William D. Hays |
1995-05-09 |
| 5408515 |
Ground-to-air telephone calling system and related method for directing a call to a particular passenger |
William D. Hays, Ernest A. Oswalt |
1995-04-18 |
| 5278891 |
Ground-to-air telephone calling system and related method |
William D. Hays, Ernest A. Oswalt |
1994-01-11 |
| 5144648 |
Method and apparatus for processing pages |
Robert Lawrence Vence, William D. Hays |
1992-09-01 |
| RE33417 |
Mobile paging call back system and related method |
William D. Hays |
1990-10-30 |
| 4747122 |
Mobile paging call back system and related method |
William D. Hays |
1988-05-24 |