Appeal No. 1999-1456
Application No. 08/864,750
In addition, our reviewing court requires the PTO to make
specific findings on a suggestion to combine prior art
references. In re Dembiczak, 175 F.3d 994, 1000-01, 50 USPQ2d
1614, 1617-19 (Fed. Cir. 1999).
We note that the admitted prior art, figure 1, shows a
distributed control system within an industrial control
process comprising a plurality of industrial process control
field devices and a central control means connected by a
primary hardwire communication link to the industrial process
control field devices. However, the admitted prior art does
not teach or suggest a first and second transceiver connected
to the industrial process control field devices for providing
a redundant two-way wireless communication.
Upon our close review of Clark, we find that Clark is not
concerned with controlling an industrial process.
Furthermore, we note that Clark is not concerned with
providing redundant communication links. In column 2, lines
36-45, Clark states that their invention is concerned with
providing a small hand held computer system capable of
operating personal information management type software such
as calendars, telephone directories, and schedule, as well as
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