| 6208625 |
Method and apparatus for increasing call-handling capacity using a multi-tier satellite network |
William F. Zancho, Michael William Krutz |
2001-03-27 |
| 6088572 |
Independent satellite-based communications systems sharing common frequency spectrum and method of operation thereof |
Dennis P. Diekelman, John E. Major |
2000-07-11 |
| 5930679 |
Satellite-based ring alert apparatus and method of use |
Keith Andrew Olds, Christopher Neil Kurby |
1999-07-27 |
| 5894590 |
Independent satellite-based communications systems sharing common frequency spectrum and method of operation thereof |
Dennis P. Diekelman, John E. Major |
1999-04-13 |
| 5641134 |
Satellite cellular telephone and data communication system at an inclined orbit |
— |
1997-06-24 |
| 5613194 |
Satellite-based cellular messaging system and method of operation thereof |
Keith Andrew Olds, Christopher Neil Kurby |
1997-03-18 |
| 5603079 |
Satellite-based messaging system transmitting during guard band of satellite-based telephone system and method of operation thereof |
Keith Andrew Olds, Christopher Neil Kurby |
1997-02-11 |
| 5596315 |
Message unit for use with multi-beam satellite-based messaging system and method of operation thereof |
Keith Andrew Olds, Christopher Neil Kurby |
1997-01-21 |
| 5543785 |
Distributed multi-outlet paging |
David M. Baum, Steven J. Goldberg |
1996-08-06 |
| 5452471 |
Network of hierarchical communication systems and method therefor |
Raymond J. Leopold, William F. Zancho |
1995-09-19 |
| 5423084 |
Spectrum recovery apparatus and method therefor |
— |
1995-06-06 |
| 5383225 |
Synchronizer for TDMA acquisition signal having an unknown frequency |
Sergio Aguirre, Christopher Keate |
1995-01-17 |
| 5363368 |
Simultaneous TDMA communication system |
Raymond J. Leopold |
1994-11-08 |
