Appeal No. 96-1657
Application 07/819,345
this suggestion justifies that it would have been obvious, to
one of ordinary skill in the art at the time of the invention,
to use radio transmission between the transmitters and the
receiver stations in place of the infrared signals. This is
so because the prior art need not show each and every element
of the invention. Additionally, we observe that an artisan
must be presumed to know something about the art apart from
what the
references disclose (see In re Jacoby, 309 F.2d 513, 516, 135
USPQ 317, 319 (CCPA 1962)) and the conclusion of obviousness
may be made from "common knowledge and common sense" of the
person of ordinary skill in the art (see In re Bozek, 416 F.2d
1385, 1390, 163 USPQ 545, 549 (CCPA 1969)). Moreover, skill
is presumed on the part of those practicing in the art. See
In re Sovish, 769 F.2d 738, 743, 226 USPQ 771, 774 (Fed. Cir.
1985).
Thus, we conclude that the obviousness rejection of claim
1 over White is proper.
With respect to claim 2, White shows the receiver station
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