Appeal No. 1998-2116
Application 08/665,760
teachings or suggestions of the inventor." Para-Ordnance, 73
F.3d at 1087, 37 USPQ2d at 1239, citing W. L. Gore & Assocs.,
721 F.2d at 1551, 1553, 220 USPQ at 311, 312-13.
Upon a careful review of Laug and Grundmann, we fail
to find any suggestion or reason to modify the combination of
Laug and Grundmann to turn a differential amplifier on or off
in response to a logic circuit-generated pulse. Neither
reference suggests that a pulse generated in response to the
rising (or falling) edge of a clock signal, such as signal "X"
in Grundmann, may be advantageously employed to turn a
differential amplifier on or off. The Examiner's citation of
column 12, lines 58-65 of Grundmann does not "clearly teach"
this feature; the cited section of Grundmann merely discusses
that transistors 138, 128, and 130 form AND gate 102, and that
the output of NOR gate 94 (signal "X") controls transistor 138
to be biased "off" or "on." No recitation of differential
amplifier function or on/off
7
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