Appeal No. 1997-3179
Application No. 08/244,286
(19) A filter for suppressing
longitudinally-conducted radio frequency
interference in voice frequency loops
consisting of:
a first inductor;
a second inductor; and
a transformer having a first winding and
a second winding; wherein said first
inductor and said first winding of said
transformer are coupled in series and said
second inductor and said second winding of
said transformer are coupled in series.
The prior art relied upon by the examiner as evidence of
obviousness are:
Weissner 2,144,950 Jan. 24, 1939
Hale 2,362,549 Nov. 14, 1944
Pontius 2,621,252 Dec. 9, 1952
Hudson, Jr. 3,987,380 Oct. 19, 1976
Kane 4,614,925 Sep. 30, 1986
Claims 16 and 19-22 stand rejected under 35 U.S.C. § 103
as being unpatentable over Weissner in view of Kane or Hale.
Rather than reiterate the examiner's full statement of
the above-noted rejections and the conflicting viewpoints
advanced by the examiner and appellant regarding those
rejections, we make reference to the examiner's answer (Paper
No. 19, mailed March 31, 1997) for the examiner's reasoning in
support of the rejections, and the appellant's brief (Paper
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