Appeal No. 2000-0330 Page 6
Application No. 08/684,871
ensured by duplicating certain virtual paths VP.” (Spec. at 4.)
More specifically, “cells arriving at said first switching node
are duplicated to be transmitted to said second switching node by
the main path and by the substitute path.” (Id. at 1.) We are
persuaded that one skilled in the art would understand that the
limitations, when read in light of the specification, require
duplicating cells that are to be transported over a main path and
then transmitting the duplicated cells over a substitute path.
Second, the examiner asserts, “it is not clear what is meant
by ‘a rank’ in the statement of ‘at least some packets are
assigned a rank.’” (Examiner’s Answer at 3.) The appellant
argues “[t]he clearest examples of rank of cells is the
distinction between OAM cells and data cells.” (Appeal Br. at 8)
Claims 26, 27, and 34 specify in pertinent part the
following limitations: "at least some packets are assigned a rank
. . . comparing means for comparing packets of a same rank
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