Appeal No. 95-1783
Application 08/069,957
said second electric signal, that substantially represents the
acoustic energy emanating from said detection zone;
frequency discrimination circuitry (317) for creating
a fourth signal based on said third signal; and
interface circuitry (119) for creating an output
signal based on said fourth signal such that said output
signal is asserted when said motor vehicle (105) is within
detection zone (107) and whereby said output signal is
retracted when said motor vehicle (105) is not within said
detection zone (107).
The examiner relies on the following references : 2
Hendricks 3,047,838 July 31, 1962
Auer, Jr. (Auer) 3,445,637 May 20, 1969
DeMetz, Sr. (DeMetz) 5,060,206 Oct. 22, 1991
Stanzcyk 5,250,946 Oct. 05, 1993
(filed Feb. 10,
1992)
Claims 1-4 stand rejected under 35 U.S.C. § 103. As
evidence of obviousness the examiner offers DeMetz or Auer in
view of Hendricks with respect to claims 1, 2 and 4, and adds
Stanzcyk with respect to claim 3.
2The examiner’s answer cites two additional references
which have not been applied in any rejection and, therefore,
are not listed here.
3
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