PK

Philip A. Keefer

EJ E.F. Johnson: 7 patents #4 of 54Top 8%
Overall (All Time): #764,452 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5815799 Priority system for a wide area transmission trunked communication system Keith Barnes, Donald R. Bauman, Howard Neal Brace, Michael E. Mihelich 1998-09-29
5613196 Method and apparatus for a distributive wide area network for a land mobile transmission trunked communication system Keith Barnes, Donald R. Bauman, Howard Neal Brace, Michael E. Mihelich 1997-03-18
5548802 Method and apparatus for a remote network switch for a land mobile transmission trunked communication system Keith Barnes, Donald R. Bauman, Howard Neal Brace, Michael E. Mihelich 1996-08-20
5465386 Signaling protocol for a distributive wide area transmission trunked communication system Keith Barnes, Donald R. Bauman, Howard Neal Brace, Michael E. Mihelich 1995-11-07
5440759 Modular networking switch system for a distributive wide area transmission trunked communication system Keith Barnes, Donald R. Bauman, Howard Neal Brace, Michael E. Mihelich 1995-08-08
5159701 Method and apparatus for a distributive wide area network for a land mobile transmission trunked communication system Keith Barnes, Donald R. Bauman, Howard Neal Brace, Michael E. Mihelich 1992-10-27
5040237 Method and apparatus for an alternate home channel for a land mobile transmission trunked communication system Keith Barnes, Donald R. Bauman 1991-08-13