US PATENT SUBCLASS 73 / 54.03
.~.~ Of concrete (e.g., slump indicator)

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

53.01  DF  LIQUID ANALYSIS OR ANALYSIS OF THE SUSPENSION OF SOLIDS IN A LIQUID {15}
54.01  DF  .~ Viscosity {11}
54.03.~.~ Of concrete (e.g., slump indicator)

DEFINITION

Classification: 73/54.03

Of concrete (e.g., slump indicator):

(under subclass 54.01) Subject matter wherein the liquid is a mixture of cement, sand and gravel.