US PATENT SUBCLASS 73 / 861.64
.~.~.~.~ Inlet or outlet structure

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

861  DF  VOLUME OR RATE OF FLOW {23}
861.42  DF  .~ Using differential pressure {6}
861.52  DF  .~.~ With restriction {4}
861.63  DF  .~.~.~ Venturi {1}
861.64.~.~.~.~ Inlet or outlet structure

DEFINITION

Classification: 73/861.64

Inlet or outlet structure:

(under subclass 861.63) Subject matter wherein specific details of the converging inlet or diverging outlet are included.