US PATENT SUBCLASS 239 / 702
.~.~.~ With axially spaced impeller surfaces
Current as of:
June, 1999
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239 /
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FLUID SPRINKLING, SPRAYING, AND DIFFUSING
690
DF
ELECTROSTATIC TYPE
{11}
699
DF
.~ With impeller (e.g., vibrator) {1}
700
DF
.~.~ Rotary {3}
702
.~.~.~ With axially spaced impeller surfaces
DEFINITION
Classification: 239/702
With axially spaced impeller surfaces:
(under subclass 700) Apparatus wherein the positively moved member comprises at least two impeller portions or members spaced along the revolving axis.