US PATENT SUBCLASS 505 / 911
.~ Fluid reaction surface (i.e., impeller): (Class 416)
Current as of:
June, 1999
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505 /
HD
SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS
825
DF
APPARATUS, PER SE, DEVICE, PER SE, OR PROCESS OF MAKING OR OPERATING SAME
{36}
911
.~ Fluid reaction surface (i.e., impeller): (Class 416)
DEFINITION
Classification: 505/911
Fluid reaction surface (i.e., impeller): (Class 416):
(under subclass 825) Subject matter including a working structure which interacts with a working fluid so as to cause reactive movement of the working structure or, alternatively, reactive movement of the working fluid.