Appeal No. 96-0949
Application 08/236,091
effect sensors are processed by the operational amplifier 40
and fed to the comparator circuits 44 and 50 each of which
have threshold values set by the resistor network including
resistors 48 and 52 which set the threshold level for the
comparators 44 and 50. The discussion at column 6 tracks with
the structure and functional features recited in the early
portion of representative claim 26 on appeal.
On the other hand, we agree with appellants' basic
assertion that there would have been no persuasive basis in
the art from the artisan's perspective to combine the
teachings of Swenson with Laib to arrive at the claimed
invention. Swenson is not directed to a buried magnetic floor
position sensing system for an unmanned vehicle to track
locations, but instead utilizes metallic markers as bench
marks analogous to buried magnets as in Laib. The discussion
at column 4 beginning at line 58 and column 5, line 56,
indicates that there is some suggestibility to the artisan
that magnetic materials may become magnetized in the manner
consistent with the buried magnets in the floor in Laib. The
examiner appears to be relying on Swenson for the ability of
the vehicle 12 sensor 10 as generally depicted in Figure 7 to
5
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