Appeal No. 2006-0962 3
Application No. 10/117,981
Claims 15 through 23 stand rejected under 35 U.S.C. § 103(a)
as being unpatentable over Hartman in view of Arbeus.
Rather than attempt to reiterate the examiner's commentary
with regard to the above-noted rejection and the conflicting
viewpoints advanced by appellants and the examiner regarding that
rejection, we make reference to the final rejection (mailed
September 7, 2004) and answer (mailed June 27, 2005) for the
examiner's reasoning in support of the rejection, and to
appellants’ brief (filed May 5, 2005) and reply brief (filed
November 14, 2005) for the arguments thereagainst.
OPINION
In reaching our decision in this appeal, we have given
careful consideration to appellants’ specification and claims, to
the applied prior art references, and to the respective positions
articulated by appellants and the examiner. As a consequence of
our review, we have made the determination which follows.
Hartman discloses a centrifugal sludge pump having an
impeller with a single spiral blade or vane (42), a pump casing
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