.~ Including rotary nonexpansible chamber type {2}
203
.~.~ Preceding diverse pump
DEFINITION
Classification: 417/203
(under subclass 201) Apparatus in which the diverse pumps are arranged such that the entire or a substantial portion of the output of one is directed to the second so as to be serially acted upon thereby, the rotary nonexpansible chamber-type pump being upstream of the diverse pump so as to feed fluid thereto with the diverse pump acting as a second stage.
