US PATENT SUBCLASS 123 / 41.66
.~.~.~.~ Suction

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

41.01  DF  COOLING {27}
41.56  DF  .~ Air-cooled {7}
41.63  DF  .~.~ With impelling means {2}
41.65  DF  .~.~.~ Fan type {1}
41.66.~.~.~.~ Suction

DEFINITION

Classification: 123/41.66

(under subclass 41.65) Devices in which the air impeller is a suction fan for withdrawing air from the engine housing.