Appeal No. 96-0396
Application 08/091,953
Next we review the examiner’s rejection of claims 1
and 2 under 35 U.S.C. § 103 as being unpatentable over Yoshizaki
in view of Hamilton. We will not sustain this rejection.
The combined teachings of Yoshizaki and Hamilton fail
to provide any suggestion of the use of a high voltage-low
current DC power being supplied along a bus bar to at least one
slot board, and the use of a DC to DC converter on the slot
board, which would lower the DC voltage to an appropriate level
and provide appropriate amperage for digital circuitry on the
Device Under Test (DUT) board. Both Yoshizaki and Hamilton fail
to teach any explicit details of their power supply. Neither
Yoshizaki nor Hamilton mentions a DC power supply or DC to DC
converters on the slot boards therein. The examiner’s conjecture
(in the paragraph bridging pages 5 and 6 of the answer) concern-
ing the possibility of a DC power supply and DC to DC converters
on the slot boards of a burn-in oven is without factual support
in the record and appears to be total speculation based on the
hindsight benefit of having first viewed appellants’ disclosure.
Accordingly, since Yoshizaki and Hamilton fail to teach or
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