| Patent | Date |
|---|
Method and apparatus used in a simulcast radio communication system for providing improved local time
Grant 6,101,370 - Eaton , et al. August 8, 2 | 2000-08-08 |
Messaging system providing flexible roaming and method therefor
Grant 5,956,640 - Eaton , et al. September 21, 1 | 1999-09-21 |
Method and apparatus for dynamic group calling in a selective call system
Grant 5,635,914 - Petreye , et al. June 3, 1 | 1997-06-03 |
Network identification information placement architecture for messaging system having roaming capability
Grant 5,610,919 - Willard , et al. March 11, 1 | 1997-03-11 |
Messaging system and method having roaming capability and controlled group messaging
Grant 5,600,312 - Willard , et al. February 4, 1 | 1997-02-04 |
Method and apparatus for synchronizing to a synchronous selective call signal
Grant 5,555,183 - Willard , et al. September 10, 1 | 1996-09-10 |
Message fragmenting in a time diversity radio system
Grant 5,546,394 - Eaton , et al. August 13, 1 | 1996-08-13 |
Addressing method for conserving power in distributed information receivers
Grant 5,493,282 - Petreye , et al. February 20, 1 | 1996-02-20 |
Method and apparatus for delivering messages to portable communication units in a radio communication system
Grant 5,475,863 - Simpson , et al. December 12, 1 | 1995-12-12 |
Digitized stored voice paging receiver
Grant 5,455,579 - Bennett , et al. * October 3, 1 | 1995-10-03 |
Synchronous selective signalling system
Grant 5,325,088 - Willard , et al. June 28, 1 | 1994-06-28 |
Paging system using message fragmentation to redistribute traffic
Grant 5,311,516 - Kuznicki , et al. May 10, 1 | 1994-05-10 |
"Selective call receiver"
Grant 5,252,963 - Snowden , et al. October 12, 1 | 1993-10-12 |
Multi-level symbol synchronizer
Grant 5,208,833 - Erhart , et al. May 4, 1 | 1993-05-04 |
Time division multiplexed selective call system
Grant 5,168,493 - Nelson , et al. December 1, 1 | 1992-12-01 |
Method of super battery saving in a selective call receiver
Grant 5,089,813 - DeLuca , et al. February 18, 1 | 1992-02-18 |
Mixed modulation level communication system
Grant 5,051,993 - DeLuca , et al. September 24, 1 | 1991-09-24 |
Digitized stored voice paging receiver
Grant 4,965,569 - Bennett , et al. October 23, 1 | 1990-10-23 |
Multiple frequency message system
Grant 4,914,649 - Schwendeman , et al. April 3, 1 | 1990-04-03 |
Paging receiver for storing digitized voice messages
Grant 4,873,520 - Fisch , et al. October 10, 1 | 1989-10-10 |
Portable communications receiver with separate information presentation means
Grant 4,803,487 - Willard , et al. February 7, 1 | 1989-02-07 |
Apparatus and method for fine synchronization of a communication receiver
Grant 4,803,703 - DeLuca , et al. February 7, 1 | 1989-02-07 |
Pager with visible display indicating status of memory
Grant 4,412,217 - Willard , et al. October 25, 1 | 1983-10-25 |
Pager with visible display indicating unread messages
Grant 4,385,295 - Willard , et al. May 24, 1 | 1983-05-24 |
Data sync acquisition in an asynchronous binary address decoder
Grant 4,151,367 - Nicolini , et al. April 24, 1 | 1979-04-24 |
Multifrequency Receiver With Automatic Channel Selection And Priority Channel Monitoring
Grant 3,617,895 - Tomsa , et al. November 2, 1 | 1971-11-02 |
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