Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2001-09-28
2009-06-30
Tran, Phuc H (Department: 2416)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C709S206000, C370S338000
Reexamination Certificate
active
07554938
ABSTRACT:
A method and system provide a mobile workforce with instant messaging capability while maintaining contact with remote systems. The invention employs the use of a computer such as a laptop computer equipped with a wireless digital packet-switched modem.
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Davis Mitchell E.
Mills Ralph J.
Morton, Jr. Roland T.
Smith Steven G.
AT&T Intellectual Property I L.P.
Tran Phuc H
Withers & Keys LLC
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