Appeal No. 96-1869
Application 08/086,494
Each of the respective combinations set forth in
independent claims 3 and 11 requires, inter alia, a slot
element having a cavity comprising a housing for a glide slope
antenna and a volume of an aircraft landing gear door.
A collective review of the Stapleton, Noble, and Miles
disclosures reveals to us that this evidence would not have
been suggestive of the content of claims 3 and 11 to one
having ordinary skill in the art. It is our opinion, akin to
that of appellants (brief, pages 4 and 5), that the teachings
of these documents, considered as whole, would not have been
suggestive of modifying the glide slope slotted antenna of
Stapleton to yield the now claimed combination. Nowhere
within these documents do we find a teaching or suggestion for
the claimed feature of a slot element having a cavity
comprising a housing for a glide slope antenna and a volume of
an aircraft landing gear door. It is this arrangement which
permits appellants to achieve the benefit of a satisfactory
impedance match over the required bandwidth of the glide slope
system, as expressly disclosed (specification, page 2, lines
5
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