Appeal No. 1998-1805
Application No. 08/596,734
one of ordinary skill in the art to modify the pressurized
chamber system of Long by installing additional narrowed
portions, such as, for example, an explicit or implicit
teaching that this would provide an improvement over the
single narrowed portion that is disclosed.
It is our conclusion that the combined teachings of the
two applied references fail to establish a prima facie case of
obviousness with regard to the subject matter recited in claim
1. We therefore will not sustain the rejection of claim 1 or,
it follows, of claims 3 and 4, which depend therefrom.
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