Appeal No. 1997-3028
Application 08/290,083
gas, a gas storage reservoir storing a second insulating gas
different from the first insu- lating gas and a gas filling
means coupling the gas storage
reservoir to the electromagnetic valve means in response to
the output of the detecting means indicating the detection of
an insulating abnormality for controlling the electromagnetic
valve to admit at least a portion of the second insulating gas
into the gas section members of the elongated insulated
electric device. Instead, the Examiner argues that there is
nothing unobvious seen to have been involved in simply apply-
ing one of the well-known gases for the gas insulating appara-
tus.
The Federal Circuit states that "[t]he mere fact
that the prior art may be modified in the manner suggested by
the Examiner does not make the modification obvious unless the
prior art suggested the desirability of the modification." In
re Fritch, 972 F.2d 1260, 1266 n.14, 23 USPQ2d 1780, 1783-84
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