Appeal No. 2000-1338
Application 09/107,241
sense well within the level of ordinary skill in the art to
enclose the Du Plooy pump in a flexible container in order to
protect it from undue wear.
Finally, claim 14 depends from claim 13 and requires the
air pressure in the second chamber to be brought up to a level
on the order of 2-3 psi. The provision of such a relatively
low level of pressure in Du Plooy’s air compartment 20 would
have been an
10
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